I want to do a run of Skyward Sword glitchless, but there is not catagory.

There doesn't need to be a category on the leaderboard to do a run. If you think a category will be fun, go ahead and run it without a leaderboard.

There’s another thread on this forum already that has some links to a nico VOD of a glitchkess run if you’re looking for a starting point to learn from.

By the way I played glitchless in January. Not so good, but it's new at least