What if I get my AP score after my summer orientation session?
I took the AP Calculus AB exam
If you are quite sure you will score a 4 or 5 on the AP Calculus AB exam, which gets you credit for Math 11/30, then you might register for Math 12/31. Math 12 does not have a passing score on the CRE as a prerequisite. If you score a 3 on the AP Calculus AB exam, then you can register for Math 11/30/35 without taking the CRE. Note that if you end up scoring 2 or lower, then you will need to pass the CRE to take Math 11/30/35.
I took the AP Calculus BC exam
If you are quite sure you will score a 4 or 5 on the AP Calculus BC exam, which gets you credit for Math 11 and 12, then you might register for Math 13 (assuming you are required to take it: Engineering, Computer Science, Chemistry, Biochemistry, Physics, Mathematics). Math 13 does not have a passing score on the CRE as a prerequisite. Note that if you end up scoring a 3, then you will get credit for Math 11 and so should start with Math 12. If you score 2 or lower, then you will need to switch to Math 11 later and to do so will require passing the CRE.