https://www.techradar.com/news/heres-how-to-sign-up-for-battlefield-vs-open-beta

EA DICE has revealed the open beta for Battlefield V will begin on September 4 for early access and September 6 for players on Origin, PlayStation 4 and Steam.

The open beta will allow players to experience the recently-revealed Rotterdam map on 64-player Conquest mode, alongside the Arctic Fjord map on Conquest and the new Grand Operations mode.