Heirlooms. At the bare minimum you make sure all the armor pieces upgraded to 110, since this is the lion's share of your experience increase. Neck and Ring upgrades are secondary, but still important due to being able to enchant them. Trinkets can't be enchanted, but you'll want them at max as well, if only to save time by not having to worry about replacing them as you level.
In Legion, some of the dungeons include the Black Rook Hold, a max-level dungeon in Val’Sharah that once served as an elven fortress but has been corrupted by a malevolent force. If you decide to quest in Stormheim, you can also try to clear the Halls of Valor, which lets you take on the Vrykul God-King and vanquish the pure Val’kyr that are superior to those found in Northrend.
C'est très important : ne vendez pas les pièces d'équipement que vous trouverez lors de votre leveling. Il y a une nouvelle mécanique introduite dans BFA appellée Recycleur qui vous permettra d'y placer des pièces d'équipements en échange de matériaux d'artisanats, ce qui sera très importants pour vos réputations et gains de Puissance d'Azerite (dont nous allons parler après). Ce système est très similaire au Forgeron de "Diablo 3" et les habitués du jeu s'y retrouveront.
As Blizzard calls it stats were "squished," and now players are finding it harder to level with that same scaling system. It's a two-fold issue, and game director Ion Hazzikostas isn't quite sure how to fix it yet. In a massive forum post several days ago he plainly explains the issue from the start, noting that "the feel and pacing of the level-up experience is a top priority for the team."
Congratulations on reaching Level 120! There are a myriad of new things to do. The first thing you should do is head to your faction hub ship where you have been doing your mission table quests and footholds to pick up and complete the quests necessary to unlock World Quests. World Quests will provide you an opportunity to grind reputation levels, acquire gear, and gather Azerite. There are tons of new things to do that we will cover in our Level 120 Battle Guide found here: Level 120 Battle Guide