Physical Vbuck codes will soon be sold in the US, more countries would soon follow over the coming months. Now you don't need to steal mom's credit card to buy Vbucks! :
Fortnite V-Bucks | Redeem V-Bucks Gift Card - Fortnite
Buyr.com | Consoles | Playstation 4 Fortnite Limited Bundle: Playstation Exclusive Royale Bomber Outfit, 500 V-Bucks, Days of Play Limited Edition Slim 1 TB Console with Extra DUALSHOCK 4 Wireless Controller - Black