My generic advice would be to start at Calc 2. I’ve heard too many stories that HS AP courses aren’t the “same as college courses” as they claim to be. Calc 1 would go going back too far, with a 4 or 5, but Calc 3/MVC/LA might be a stretch to dive right into. Unless a 5, and the actual course, was easy-peasy.
(Fwiw, I used my 4 on BC to go right into Calc 3 and was fine… But that was long ago).