Unfortunately, if the PIPI Invitational does occur then Chess.com will almost certainly not cover it due to the fact they closed one of the subject accounts due to Fair Play violations.
Where to Watch PIPI Invitation 2020

This website is shallow and pedantic
Well, I figure it's probably correct for Chess.com issued a lifetime ban against him. I don't think it would make sense for them to sponsor or support a match like that in any way. However, there will be plenty of other places which would gladly and quickly cover said PIPI Invitational if it were to happen.

Whatever happened to the pipi invitational?
Pretty sure it won't happen. I haven't seen anything from So or Petrosian indicating they are going to have a grudge match. If does occur, it certainly wouldn't be covered by ChessDotCom as Danny Rensch has explicitly stated that they won't cover such publicity involving a member they closed for Fair Play violations.
Will chess.com be covering the PIPI Invitational Tournament?