Every weapon in Final Fantasy VII Rebirth has its own Weapon Proficiency that you can increase to permanently learn new moves. Seeing the progress can get confusing, though, and I’m here to get you on the right track.
How to See Your Weapon Proficiency in Final Fantasy 7 Rebirth
Any weapon abilities that have a yellow checkmark in the equipment menu indicate that you reached full Weapon Proficiency. Each weapon in the game has an ability info screen on the right that you can view within the same equipment menu. Directly under the name will be a bar that indicates how much progress in the proficiency you have so far. So if you’re viewing the Buster Sword on Cloud, look for a blue bar.