UPDATE: (30 Mar. 2020 11:07 PM PST) Both the PlayStation 4 and Steam servers for the Resident Evil Resistance Open Beta are now live.
After a delay over technical issues, the Resident Evil Resistance beta has finally come to PC via the Steam store. This comes with surprisingly little fanfare and was only brought to our attention when a reader, @RicoBeerus, spotted it and informed us.
A search using the PS4 store app struggles to find anything, but the online browser version you can access through your phone seems to have it. You can access it via this link to download, though it appears the servers are still not live.