So I will be taking IB Physics SL Junior year and i know you do not get college credit for IB SL so is it possible for me to take a Physics C AP exam and get a 4? Also, is this true for Spanish IB SL also?
From what I understand, IB physics (both SL and HL) are non-calculus-based, so they would not be considered equivalent to a calculus-based physics course (either at a university, or AP physics C).
For foreign languages, most colleges have their own placement testing so that you can take the appropriate level based on previous high school courses, regardless of whether you have any scores from AP or IB.