Yes, varies a lot I think. My D took Calc BC as a junior (4) then finite math as a senior. (She was overloading her schedule with extra science courses and didn’t want another hard math so passed on multi-variable.)
Was thinking of re-taking Calc 2 in college, esp. b/c of the gap, but her advisor said Calc 3 was a better (and easier!) class and strongly recommended not re-taking 2. I think it’s more of a ‘sort out’ class for pre-med, etc.at her particular college. She worked hard at Calc 3 as a first semester, first year, ended up doing very well.