How I can Save the Gamechash

I have a game made, but I don’t know how I can make that the game mony ist stored there.
I will that when I close the game an then open it again, that than the chash in the game ist always there.
So if anyone knows how I can make it save the money when I exit the game and load it when I open it again, please let me know.
Thanks for help Leander:)

Try this Youtube tutorial from Wishforge games - it works.

As does this GDevelop example