The invitation will appear in the Samsung Members App if it becomes available to you if your phone has been supplied directly by Samsung.
However do take into consideration that the Beta software can be glitchy by it's very nature so sometimes features won't work such as banking apps and other features may not work properly.
I wouldn't recommend to download this onto your daily driver i.e main phone @rslira
Take care. 😎
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help.