Renegade Raider is one of the rarest skins in the game. You could only get it if you played during Fortnite Season 1, and you needed to level up to 20 to get a chance to purchase it. If you were playing back then, reaching that level unlocked it from what was known as the "Season Shop" for 1,200 V-Bucks.
In the 8.10 patch, Renegade Raider was given a new style. This doesn't mean the skin will be in the shop.