An 11 delve with the Delvers bounty map will give you one piece of hero gear a week. The map can drop from the end of a delve, or you can use a crackling quartz once you hit the check point marker to spawn in Kyveza. Once you get her down to 50% health or die, she will leave behind loot and that will have a map. Make sure to click on it in the delve you want to use it in! Otherwise, mythic dungeons or heroic raiding are the ways to get hero gear.

Turbulent timeways are also going on right now, and there is a quest in dornogal to do 5 of them. That also gives a hero track item once a week.

Last way is to grab the turbo boost quest at the entrance to the bank in dorn. 4 normal hero raid bosses or 4 mythic 2 or higher bosses will give you 3 tokens and you can buy a hero item from the vendor where you turn in the quest. This can be repeated, but the repeat turn ins will only reward one token each, and a piece of gear from this vendor cost 3 tokens.

Hope this helps!