It was really fun and an unexpected use of the theme which I really liked! It was one of the most interesting games I've played in the jam and I like the simplicity. Well done! The small details like the gum having varying colors is a nice touch, the controls are also very tight and it feels smooth to play.
I got 1700 but stopped because I had to go. Maybe if there's a requirement you need to collect that gets higher as you go it could keep it exciting. It's easy to leave early after collecting one or 2 coins and avoid all the danger.