The Waterworks emote is an Uncommon Fortnite emote. Waterworks was available via the Item Shop for 200 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite Waterworks Emote Details
Show 'em your battle cry.
Fortnite Waterworks Emote PNG Images
Here is the PNG images of Waterworks below!