How many APs does your school offer? It all depends on the courses offered. For example, my school offers ~20 AP classes and I will have taken ~14 by the end of high school. But then again, don’t take so many so that your grades drop. I would not self study APs unless you really want the credit. Spend that time on extracurriculars that you are really passionate about. If I were you, I would focus on the AP classes that interest you. After all, high school shouldn’t be all stress and no fun.