What do you classify as a certification? Degree? Vendor certification? Government license? Obviously a plumber’s or electricians license will make you big mone

What do you classify as a certification? Degree? Vendor certification? Government license? Obviously a plumber’s or electricians license will make you big money here in Australia. My law degree and lawyers certification does not (over supply of lawyers). I did a masters but that was more to learn. No one asked to see grades ever.