How long does it take for Apple Pay to transfer money to your bank account if you receive Apple Pay money on a Friday?

1 to 3 business days. See the following from Transfer money from Apple Pay Cash to your bank account - Apple Support

Bank transfers usually take 1 to 3 business days to complete. Check your bank statement to see if the transfer has been processed and deposited into your bank account. Bank transfers won't be deposited on bank holidays or the weekend. See holidays observed by the Federal Reserve on federalreserve.gov.