Take it if: you're a STEM or econ-track student, your algebra is solid, and you want college credit for Calc 1. A 4 or 5 skips you past the most common intro-calc course at most universities.
Skip it if: your algebra or precalc was shaky. Take another precalc course or a strong precalc with more runway before attempting AP. Rushing into AP Calc with weak algebra is the single biggest predictor of a 1 or 2.
The students who regret AP Calc AB are the ones who memorized procedures without understanding them - then froze on any FRQ that didn't match their textbook examples. Don't study like that.