Spoiler Alert
Can you see the One UI7 Beta banner in Samsung Members App?
Yes - click on the link and follow instructions
No - your device isn't eligible
Also note that a number of users are saying that registrations are now full and that there are no more slots available at the moment.
(Samsung may release more slots in the coming days but that is not guaranteed - you'll have to keep coming back to the forum and check in).
I am not employed by Samsung nor do I receive any remuneration as a Samsung Members Star.
My device is an S25 Ultra.