Yep. There’s 0 through 3. The higher you get the more stuff you can do.
https://us.forums.blizzard.com/en/wow/t/new-forum-guide-syntax-and-features/19903
If you go to your character page and add .json to the end of the url it’ll take you to a page with your attributes. Once there, look for the highest trust level it shows.
You’re level 3.
https://us.forums.blizzard.com/en/wow/u/Pebrock-kelthuzad.json