It's never too early to start thinking about what type of careers you are interested in. That being said, you do not need to know what you want to do for the rest of your life right now! :)
If you curious about different career paths that you might enjoy, try taking a this career quiz. If you have an idea of what field you want to work in, but aren't sure what the options are within that field, I recommend utilizing this college major search tool!
My goal is to support you in finding a career that is meaningful to you. If you're not sure what you want to do after high school, my advice is to continue pursuing your interests as much as you can! Gaining experience in jobs, internships, clubs will help you determine what you like and don't like.