Unfortunately probably not. If it is locked to AT&T or Verizon and not Unlocked it will probably not receive the beta. It's my understanding that it is a Carrier "thing". I use to buy Carrier products but now I buy Unlocked for that reason. Plus, I do not like the bloat ware Carriers put on devices. Hope this helps.
I have the sprint version of the note 20 ultra and I don't seem to be able to find the beta program for the phone . It did read that its available for sprint and t mobile versions . Hkwmdovi go about finding that