Green’s Dictionary of Slang

(orig. US black) skills, capabilities.

1993		Hartford Courant (CT) 15 Oct. E2/5: The Shaq’s debut album [...] ‘I Know I Got Skillz’ is no 5 on Sound Scan’s sales chart.
1997–2000		Da Bomb 🌐 13: Got skillz: To be talented in what you’re doing.
1999		Rocky Mountain Teleg. (NC) 14 Apr. 21/2: The School of Skillz provides kids with life skills.
2010		Honolulu Star-Advertiser (HI) 10 July 45/2: I’m not trying to emasculate them with my awsome map-reading skillz.
2014		Florida Today (Cocoa, FL) 20 July C5/1: His ‘I Got Skillz’ football camp is about more than just football.