Finding three Dance Floors in Fortnite is a new challenge in Week 8 of the Battlepack challenges. The Dance Floor locations can be found in the Flush Factory, east of Retail Row in a barn and west of pleasant park in a building.
Simply equip your standard dance moves and activate them by pressing down on the D-Pad. Choose the moves of your choice and dance on each of the three dance floors to unlock this week 8 challenge.
Fortnite WEEK 9 Search Challenge (Treasure Map in Moisty Mires / Finding the Week 9 Battle Star)