Just some suggestions....... since you are in high school, take all the math and science courses available.
Try to get a job as a Co-oP student during the summer with a big company if possible. If not possible, try to work at a local machine shop or construction company if available.
Begin researching a good engineering college near you & ask if you can take any college courses before you graduate from high school.
These are general suggestions.... if you know anything more specific about what you want to do, steer yourself in that direction because you will always do better as an “expert” in a particular area of study... and make more money also!
Good Luck