Why not try the old final exams for CU Boulder’s calculus 1 and 2 courses to see if you really need to retake them, or if you know the material well enough to move on?
Here are some old exams for the CU Boulder calculus 2 courses (MATH 2300 and APPM 1360):
http://math.colorado.edu/~casa/teaching/18fall/2300/exams/2300exams.html
https://www.colorado.edu/amath/academics/exam-archives/appm-1360-exam-archive
More CU Boulder APPM course exams:
https://www.colorado.edu/amath/academics/exam-archives