Which colleges on your list want subject test?
Are you home schooled or go to an online school? Or in an unaccredited school?
Have you taken the SAT1 or ACT yet? Or the PSAT? What are your scores on those tests if you have taken them?
For the most part, unless you are in certain situations or are looking at a very small handful of schools, the subject tests are not anywhere nearly as important as the
SAT1 or ACT and those are the tests along with your grades where you should be focusing