Check their website https://www.dmv.ca.gov/portal/make-an-appointment/
My son didn't make an appointment, but registereded online to take the test. They gave him a code for his registration. Then we went to the office at 8:00 am. My son got in line. A DMV employee came by and took his temperature and asked for his code. In less than 10 minutes he was in the building taking the test. A surprisingly short time later we were on our way home, permit in hand.
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