All users need is to create a Bethesda.net account and they will be good to go and will be able to take the game for a spin. Note that this is still not the final release of the game and you could think of it like it is an open beta. This means that Bethesda is still developing certain aspects of it so expect to see some bugs pop up every now and then.
The company also announced that they will be taking player feedback into consideration and will be rebalancing certain aspects of the game ahead of its final release. Unfortunately, Bethesda still does not have a set date on when the game will be made available to all, but presumably by opening the game up to more players for testing suggests that the company is pretty confident about the state that it is in and hopefully we’ll have a release date soon.
If you’d like to check it out, head on over to the Google Play Store or the iOS App Store for the download, but remember you will need to create an account at Bethesda.net’s website first.