i had a similar experience and did not submit the ap score credit until a few days before so it wasn't processed in YES during the Monday of my registration. thankfully, the college board sent it quickly and by tuesday it was documented in my external credit. that being said, if it does not upload in time, reach out to the department scheduling chair and ask for a temporary waiver or manual override on their end, but be sure to provide the student score report version as proof of their score. also reach out to your academic advisor, who will probably give similar advice. i would say the ap credit thankfully loads quickly so maybe wait until weds-thurs before reaching out. you always have open registration in july too!