https://www.gamespot.com/articles/fortnites-season-6-battle-pass-features-new-skins-/1100-6462102/

Fortnite: Battle Royale Season 6 is officially live on all platforms. Along with its many other additions--map changes among them--that means a new Battle Pass is now available for purchase. As is standard, you can buy it for 950 V-Bucks (about $10 in the US), and Epic estimates it will take about 75-100 hours to unlock all of its goodies. This season gets spooky with some distinctly Halloween-themed loot as "Darkness Rises."

Buying into the Battle Pass lets you complete seasonal and weekly challenges to earn XP and gain cosmetic unlockables. Each Battle Pass has 100 levels to earn in all, so grinding out the highest tiers of rewards takes quite a while. As a shortcut, you can also buy additional tiers for 150 V-bucks each, or a bundle of the Battle Pass and 25 tiers for 2,800 V-Bucks ($25 in the US).