This one goes all the way to the hop.
💃 Square Up dance is a Rare Fortnite Emote.
🚶♂️ It's a traversal dance. It means that you can move and walk while using the emote.
📅 This emote was added at Fortnite Battle Royale on 31 August 2021 (Chapter 2 Season 7 Patch 17.50).
Square Up belongs to Chapter 2 Season 7. It's not yet known how to get the gesture Square Up.