Need help?

I am a high school junior currently suffering from a chaotic time due to career confusion. I want to know a clear path for my future. My majors are maths and chemistry, and Computer science as a minor. I want to get a clear-cut path for my future, as I am running out of time. I need to decide what to do next. I need genuine help from a mentor. Along with that, I need to know about some useful free websites as a teenager to get into top universities