There does not seem to be any setting to get the health to respawn.
I have come to the conclusion that scripting is the answer.
I have looked at the scripts that default for the health entity and cannot make sense of them enough to know how to change them.
I am open to suggestions.

If you ask me to post my script here, bare in mind I have written no script.

You can set all your Lives, Health and replenishment speeds etc in the " Start Marker " properties.
Is that what you mean ?

I mean health entities that can be picked up by the player as they play the game.

Do you want a script to re-spawn a health-kit or med-kit, so the player can go back after a few seconds to get another item to increase their health points?

Smallg made a script for me like this. I used the script so the player can drink water to increase their health points, and 20 or 30 seconds later it re-spawns and you can get another drink of water to increase your health points again.

Check out this link - https://forum.game-guru.com/thread/207801?page=20#msg2572192

Ahh I thought you were referring to the replenishment ..

This script works as far as the timer to respawn.
However it doe not give health, it takes one point of health each time it is collected.
If there is a way to make it so that it can picked up just by running into it and give heath instead of take it, I think that would more productive.
I have looked at it and cannot figure out the method needed to do that.
Is there anyone that can do that it would be most helpful.

I used this script with a med-box and it worked fine. However, some of this can be tricky to get it to work as desired.

Sometimes when I used this script with an entity model other then the med-box, it would take 1 health point away. I discovered that if you used another entity or made your own entity model, it might not work. Sometimes entities other then the med-box don't work so well, so here is what you can do to solve the problem. (1) You need to make a back-up copy of the entity you want to use and copy it's FPE file also. (2) You should then copy the contents of the FPE file from the med-box and use those contents to replace the contents of the FPE file of the entity you want to use. (3) Remember to change the model name in the FPE file to the entity model name you are using, and save the FPE file. The entity you want to use should then work with this script.

The script can also be altered for a simple approach pick-up instead of needing to push the "E" button.

I just altered it to a simple approach pick-up, then tried it out, and it worked with the med-box.

I will put the altered approach pick-up script here so you can download it and try it out.

@Len the man There is no prompt of any kind and it will not allow the player to pick it up.
I am not even able to identify the lines in the script that would say how much health the the player is supposed to get.
Even that would be helpful to know in the stock scripts that came with GG.

You might be thinking that I did not follow your instructions.
I followed them to the letter.
(1) I made a back-up copy of the entity I want to use and copy it's FPE file also.
(2) I then then copied the contents of the FPE file from the med-box and used those contents to replace the contents of the FPE file of the entity I want to use.
(3) I changed the model name in the FPE file to the entity model name I am using, and saved the FPE file.

I did not work as you described.
I have supplied the script that you posted.
If you look at the way it is written are you sure that is the file that worked for you?
I just want to make sure that I have the correct script file.

I did finally figure out how to change the amount of health that the player gets when they pick up the health entity in both the health_with_respawn_timer_pickup.lua and health_with_respawn_timer.lua.
Although the health_with_respawn_timer_pickup.lua does not allow pickup at all.

I have tried several different approaches and have failed miserably at not having to use the "E" key to pick the health using this script.
Other than that this script works great.

If I put a med-box on the ground (in the editor) and use the health_with_respawn_timer_pickup.lua script, it works fine... However, if you use it to try to pick something up that is on a table or if the entity is on top of something, you might need to edit the script to increase the distance that the entity can detect the players approach. To do this, you need to open the script in notepad++. Find line 13 where is says PlayerDist < 80 and change the number 80, and increase it to something like 100, or 120. This should help.

If this doesn't work, then I would ask what version of GG you are using, because some scripts don't work in some versions of GG.

It did not work with the changes you said to make. Not on a barrel or on the ground with the dist set to 300.
This the version of GG that I have.

From what i recall in FPSC you just set the spawn time and it would just appear after the player grabbed it after the time given. I believe Game Guru doesnt even use the spawn fields in the FPE... which is unfortunate....

Highly unfortunate!!
Having tried different approaches to this issue, I have come to the conclusion that it is as good as it gets.
Community based help has taken as far as it can and I thank you.