Not all APs are created and viewed alike. For example, it you are a STEM person applying to HYPSM and other tippy top colleges, you should take as many of these as are offered: AP Chemistry, AP Calculus BC, AP Physics C Mechanics, and AP Physics C E&M. It’s not the quantity, it is the quality. AP Environmental Science/Ecology, AP Statistics, AP Psychology, AP Physics I (or maybe it’s called B), and to some extent AP Calculus AB and AP Biology, although AP, are often viewed in a different tier. Classic liberal arts interests would likewise suggest you at least take an English, History, and Foreign language APs.