How to add .rvz files to dolphin?

I recently downloaded melee through myrient from the megathread. After I got the compressed zip I opened it up and took out the melee file onto my desktop. I made a new folder, went into dolphin > config. > paths. And then set the new folder as the main game folder. But then when I put the melee file into it, nothing happens. I tried refreshing it over and over, but still nothings happened.

At first I thought it could’ve been that it was a .rvz, but those file types are specifically made for dolphin, and the only way I’ve seen to convert them to .iso, is when they’re already in dolphin showing up as games. I haven’t really seen anyone else with this problem and I don’t know what to do.

The only other problem I could think of was the actual melee file itself? I know sometimes files like that are the white piece of paper with a disk over them, but this one is just the regular white paper looking file. (Excuse my extremely unprofessional terms, I’m inexperienced)