Beep Beep is an Uncommon Fortnite Emote. Beep Beep was available via the Battle Pass during Season 12 and could be unlocked at Tier 68.
How-to Get the Beep Beep Emote
Beep Beep is part of Season 12. If that season is still currently in the game, you can obtain this item by purchasing and/or leveling up your Battle Pass.