I would take as much math as you can and try to actually learn it at a deep level. no matter what path you take from here this will suit you well. Besides that

I would take as much math as you can and try to actually learn it at a deep level. no matter what path you take from here this will suit you well. Besides that, have fun go to parties try out hobbies and just generally do whatever you feel like. I personally wish I had spent more time learning an instrument at that age.