How would I read it when a score is at a certain amount. Such at "when score reaches "1" apply force "x"

You realize how much the would help people make a save system? Let's say every time you finish a level your global score is added 1 and the score before it was "10" so now it's 11, the. Make it so "if score reaches "11" save score and then when you quit and rejoin and it's at 11 it will know that you are now at 11! Or if you have 13 coins and it will read "if score is "13" add to score -13

Please :)

Hello, I am working on a game and I don't know how to get parallax backgrounds working! Help me and I will put your name in the credits of the game