Saving/Loading Data Across games

Hi! Is there a way to save and load data across games? Cause I have a cafe and I want the points to save to the training center and interview center.

Have one datastore set up in all your places under one game. And everything should transfer.

I dont know how to do that lol

I am trying to add the training center as a place, but it says “Cant set start place” or something