How do i get aspects token of merit?

I just came back to wow a week ago, and I am unsure how i get Token of merits to make my chars tier set? I was told there was a quest by the vault? But I have 3 chars and there is no quest from that guy at all?

You don’t use tokens of merit to make tier pieces. You have to do the revival catalyst quest every week that will give you charges. You may have to do the breadcrumb quests for the catalyst before the quest will show up next to the vault. You do have to fly over to the catalyst at Tyr’s Hold to turn in the quest though.