Self Reporting AP Scores

I’m going to be applying to the UCs this fall. On the application, do they require that you self report all your scores? For example, I’m currently taking the AP Physics 1 course but I’m not very confident about the exam. If I don’t get a 3 on that exam, will admissions officers wonder why I didn’t self-report that score/will it affect my admissions chances if I don’t self-report that score?

You are not required to report your AP scores on the application and for the majority of UC’s, AP scores are not a major consideration during the application review. Up to you if you want to report the scores or not. Anything below a 3 will not get credit anyways.