You need Chemistry Honors before you take AP Chem, or Biology (Cp or Honors) before AP Bio (you could try AP Bio without an earlier bio class if pushed).
If you’ve already taken biology, chemistry, and physics at the regular or honors level, you can take whichever you like best.
In terms of major, for cor cognitive science, I’d say AP Bio would make the most sense (and AP Psych to have a better idea of what you’re getting into :p)