Sometimes you just need to skip the battle.
Tra La La dance is a Uncommon Fortnite Emote. This emote is one of the Battle Pass cosmetics in Chapter 1 Season 10. It was available once you have reached Tier 14.
The gesture Tra La La belongs to Chapter 1 Season 10. Thia gesture was available as a reward by unlocking Level 14 of Battle Pass from Chapter 1 Season 10.