I’m on a boosted character, and now that I’ve finished Argus, I’m unable to queue for BFA dungeons.
When mousing over the dungeon names it says, " you must acquire your heart of azeroth in order to access battle for azeroth "
How do i get the heart of azeroth?
You need to start the quests for BfA.
The first step is the Battle for Lorderon Scenario. Assuming you used a 110 boost (not a 100 boost) the training scenario should have automatically queued you up for it at the end. If you left the training scenario early (or this is a 100 boost) you should still have “The Battle for Lorderon” quest in your log. (If not, it should pop up if you go to Stormwind.)
After that is done, you should get a pop-up quest for “A Dying World” that sends you to Sillithus. That quest will lead you to getting your Heart of Azeroth.
Sometimes addons have been known to interfere with quese pop-ups, so if they aren’t coming up for you, turn of your addons and try relogging.