https://www.gamespot.com/articles/fortnite-servers-having-issues-on-ps4-xbox-one-and/1100-6457488/

If you're having a bit of a rough time playing Fortnite on PS4, PC, and Xbox One, it's because the game is going through a spell of login, matchmaking, and social connection issues, according to the game's official Twitter page. These began as a result of a big influx of new players and, in response, developer Epic Games has scaled up to accommodate the new traffic.