I don't know about USMA, but in general for Colleges:
Fret not...colleges are much more concerned about your grades in those classes as opposed to the AP tests.
Why is that?
1) Doing well in a class shows you can learn over the year and work hard over a period of time. That is what they want in college.
2) Not all HS have many APs.
3) Many people take AP tests senior year which is too late for admissions
For example, Stanford says:
Students currently enrolled in AP courses are not required to submit AP scores as part of our admission process. AP scores that are reported are acknowledged but rarely play a significant role in the evaluation of an application. Grades earned over the course of a term, or a year, and evaluations from instructors who can comment on classroom engagement provide us with the most detailed insight into a student's readiness for the academic rigors of Stanford.
http://admission.stanford.edu/basics/selection/prepare.html
Let me state clearly: we do not admit students solely because of their AP courses/scores. There is no minimum or recommended number of AP courses. AP scores are not part of an admission formula.... What we are saying is that, despite what you may have heard, college admissions isn’t a game of whoever has the most APs, wins.
https://mitadmissions.org/blogs/entry/on_aps_1/