Most college courses are generally 3 credits sometimes one with labs are counted as 4 credits. Some colleges will give you credit for multiple courses if you score a 5 on the exam this is especially true in language classes. Colleges that award credit for AP scores usually have a chart on their web page with their policies.
Here’s OU’s
https://www.ou.edu/content/admissions/apply/transfer-credits/advanced-placement.html
You can figure out the number of credit hours a course by looking at the last number in the course number. (This again is college specific! I’m just mentioning it for this example.
My DD took the following AP exams the number after the exam is her score followed by the OU courses she was given credit for the course numbers in red can be applied to her degree requirements.
Chemistry (5) CHEM 1315, 1415
Computer Science (5) CS 1323
English (5) ENGL 1113, 1213
German (5) GERM 1115, 1225, 2113
Math-Calculus BC (5) MATH 1914, 2924
Physics 1(5) 2 (4) PHYS 1114, 2414, 2424
Physics C (5) PHYS 2514, 2524
World History (4) HIST 1913
US History (5) HIST 1483, 1493
Music (4) Non-Aural (5) MUNM 1123, MUTH 1511, MUTH 1522
Having AP credit for CS 1323 although it doesn’t count to her degree allowed her to start with a higher level CS course so even though she can’t use the actual credit for her degree it still helped.
I can’t stress this enough, each individual college will have it’s own rules! If you know a few of the colleges where you might like to go you should look up their particular AP policies. If you’ve done the math on the AP credit my D can apply to her degree you see she is two credits over the limit they ended up only giving 3 credit each for the two physics class and not credit for the labs. She will appeal but as of now it looks like they may require her to take two one credit physics labs but not the associated classes which is just weird. Had she known about this rule earlier she would have done things differently.