If you’re thinking about joining them you better forget it, they are a streamer only guild. The big bois like Soda etc.
A BNET account can hold up to 8 WoW licenses. You can add an US license here:
https://account.battle.net/games#game-account-creation
" Starter Editions & Public Test Regions
Select a region for your World of Warcraft Starter Edition account."
And select “Americas and Oceania”