[Marricio]

Use a separate variable similar to TotalTime that resets when it hits 60 minutes. In a minute timer, add 1 minute to the variable and once it hits 60: add 1 Score, reset variable, repeat. Of course, ideally you would have to save this in a player file so the player can play 30 minutes today and 30 minutes tomorrow to hit 1 score. TotalGameTime is also a neat function, you could modify it to work this out too but I think the other method I mentioned is more practical.