I’m going to assume the race you are referring to is the Kul’Tiran Human allied race since you mentioned “chubby barbarians” and that you wanted to make a druid
The questline you will need to do is not difficult but it will likely take you several hours to complete if you have not done any of the questing in those zones yet, as it involves completing the basic levelling/patch questline of the BFA expansion. You can easily do the entire thing solo on any class at your current level without any difficulty.
You will be able to effectively track your progress towards unlocking the race as you go along the questline by checking the [Tides of Vengeance] and [A Nation United] achievements as these are the prerequisites to unlocking this race. After you complete these two achievements you will have to go to Stormwind and you will see a quest at the embassy that will take maybe an hour tops, after which you will unlock the Kul’Tiran race (and get their racial mount!)
Here’s the link to the WoWhead article that highlights the entire process of unlocking them, and will give some info on the racials and whatnot of that race if you’re interested
Hope this helps!