I have spoken to several frustrated parents who are unable to find a test site to take the PSAT. From what I understand, most are only accepting their own students due to Covid AND space is limited. They have added a test date in January which hopefully will allow “outside” students to take the test.
You can do a school search here: https://ordering.collegeboard.org/testordering/publicSearchCont
My best advice is to try numerous schools, you may even have to travel. See if you can get on a waiting list for the January test date…..you may have to press the issue.
The College Board rep suggested they may have other options in the works but nothing concrete she could say at this time.