Fortnite Chapter 2, Season 8 brought back Punchcards, though they have changed a bit in Fortnite Chapter 3, Season 1. Punchcards are now Challenge Goals, and are used in combination with Daily and Seasonal Challenges to help players earn XP towards their Fortnite Chapter 3, Season 1 Battle Pass.
Daily and Seasonal Challenge Goals
Punchcards are gone in Chapter 3, Season 1, and have been replaced with Challenge Goals and character-specific quests. They work similarly but have just gotten a name change. Players can find their Daily and Seasonal Challenge Goals on their quest page, just above where their Daily and Seasonal Challenges appear.