If your academic results are satisfactory, you might get a chance for a full ride scholarship. To get that, you need to do well on your SAT/ACT(1400+ on the SAT is recommended), compile a decent personal statement, have adequate extracurriculars, and finally, ask your teachers(preferably from core academic areas) to write recommendation letters for you. Bear in mind that your college choice affects your chances of getting a scholarship too. Research well before you apply.