From VG247: “Now that Season 5 has kicked off proper, its time to get stuck into another set of Progressive Skin challenges. Heres how to unlock all the pieces of the Drift and Ragnarok Skins and complete the tier 100 challenges. Theres another set of challenges that you have to complete to unlock a skin too”.
Source: N4G PC Fortnite Drift, Ragnarok and Road Trip Progressive Skin Challenges