lojato - In order to advance in your chosen covenant, you need to raise the level of fame. This system is unique to each covenant, based on a level system, and shows how much the covenant you choose respects you.
Fame is considered a currency, so it will be stored in the currency tab. There will also be separate fame currencies for each covenant. Currency belonging to one covenant cannot be exchanged for the currency of another.

nirih - Increasing fame brings benefits. This includes an increased level of items obtained for world quests, and a variety of different rewards, including quests, followers, cosmetic items, etc.
It helps me to get through and get the WoW Shadowlands boost from Legionfarm https://legionfarm.com/wow-shadowlands
I am pissed off by the skills of these pros. Sometimes it seems to me that they know everything about the game.