The Draco Meteor move tutor is an old man on the left side of Circhester Bath.
"SwSh: an elderly man in the Hero's Bath in Circhester."
Source: https://bulbapedia.bulbagarden.net/wiki/Draco_Meteor_(move)#By_Move_Tutor
Hope this helps :)
He is in Circhester at the hero's bath. He is wearing a pink shirt.
The Draco Meteor Tutor is located in the west Hero's Bath. You go in and find a man with a big belly west of the pool. He is in a pink shirt.
Source: Experience Hope I helped!
