The Gumshoe skin is an Epic Fortnite outfit. Gumshoe was available via the Item Shop for 1500 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite Gumshoe Outfit Details
The kid's got gumption.
Fortnite Gumshoe Outfit PNG Images
Here is the PNG images of Gumshoe below!