Due to government health measures to combat the coronavirus, WWE may not be able to produce and broadcast its shows live. This is the reason why WWE would prefer to play the card of caution and thus register its shows in advance, Wrestlemania 36 included.
According to PWInsider, WWE will start the recordings today, Saturday, and conclude them on Thursday with Wrestlemania. It is possible that changes are made at the last minute, but if this is not the case this is what the recording schedule should look like:
Saturday 21/03: Smackdown episodes of 27/03 and 03/04
Sunday 22/03: Recordings of content for the next episodes of NXT
Monday 23/03 and Tuesday 24/03: RAW episodes of 03/23 and 03/30
Wednesday 25/03 and Thursday 26/03: Wrestlemania 36 nights 1 & 2
PWInsider added that WWE plans to record additional content for Wrestlemania in camera locations other than the Performance Center. This content should be recorded after Wrestlemania so in the following days next Thursday.