Samsung usually brought the beta program for the flagship devices released under at least last two years, if you are also using one of them them mentioned above you can follow the below steps to get it on your device:-
First of all as the preparation you should check if the Samsung member is up to date
Once updated, check if you are getting the dedicated banner of the One UI beta program, if its there then tap on it.
Now complete the application form and submit it
Once the registration is done, you will get a notification about the beta software with in few minutes.
In case, the notification does not arrive even after waiting few minutes then you can also check it manually from the software update menu from the system settings.
