The current (2021) time in the US is about 30 minutes. They call to verify information in 20 minutes, accept the application in 2 minutes after the call, then you can pay the fee to complete the application in a few minutes.

I just want to report that it took about 2 hours to update XCode to 12.4 on a MacBook Pro. My internet speed is 90.6/93.0 Mbps