You'd think the big ones would have them all, but honestly, 'Victorious' Jori feels weirdly scattered across platforms right now. I mean, I still check FanFiction.Net sometimes out of habit, and the classic fics from 2011-2014 are all there, but the tags and categorization are a mess. It's a lot of wading through to find the good ones. Archive of Our Own is where most of the newer, polished stuff lives these days. The tagging system is a godsend for finding specific tropes, but sometimes the sheer volume of tags on a single story overwhelms me.
For active, ongoing tales, Wattpad has a surprising amount. The writing quality swings wildly, but the engagement in the comments is super lively, which I love. You can tell which stories people are really invested in. It's less about literary perfection and more about that instant community reaction. My personal dark horse, though, is a specific forum that's mostly defunct now but had these incredible, long-form collaborative Jori fics. Finding them is like digital archaeology, but man, they were something else.