Perks in Fallout 76 are special abilities very present in the fallout series that gives a unique bonus to the players taking them. Bonuses so unique that weapon usage and playstyles would become more reliant on the abilities unlocked by perks in the later stages of the game.
In Fallout 76, the perk system is different compared to other fallout games. The perks are gained and kept with the perk card systems. The player would only be able to equip a limited number of perk cards and would allow perk cards to be tradeable.