The Whirlwind emote is an Rare Fortnite emote. Whirlwind was available via the Item Shop for 500 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite Whirlwind Skin Details
Around and around abound.
Fortnite Whirlwind Skin PNG Images
Here is the PNG images of Whirlwind below!