I have already chosen AP Euro for my schedule, I’m supposed to be taking the class 2nd term. Should I change my AP Euro class to APUSH, or should I just leave it as it is? If I take AP Euro or APUSH this year, I’ll just be taking the one I didn’t take during junior year.
It’s fine. It does not matter which one you take first, if you are planning to take both.
Take AP Euro now, and take APUSH junior year (most students take it in this sequence, with APUSH coming during 11th grade).