Teammate XP Boost

Save the World
Teammate XP Boost is one of the types of Experience Boosts available in Fortnite. Using one allows the user to grant a teammate increased Commander XP gains, up to a specific amount of bonus experience, similar to the regular XP Boost. The remaining boost experience can bee seen by placing the mouse over the Commander XP bar.

Battle Royale
In Fortnite: Battle Royale, a Teammate XP Boost is used to boost a duo or squad member XP during a match to progress their Season Level. Teammate XP Boosts are acquired at certain tiers in the Battle Pass. You will receive these XP boosts when in a Duo or Squad with someone who has one.

Teammitglied-EP-Boost