To verify this, completely close out of the game and then boot it up again. Once you change these settings, Fortnite will automatically reset its resolution on your TV and properly adjust your screen size.
Below are the steps to fixing the Fortnite PS4 screen size bug. Fear not, this is just an annoying bug can easily be fixed and will likely be patched with the next update. If you've booted up your PlayStation 4 and hopped into Fortnite Chapter 2 Season 1, then there is a good chance that your game doesn't fit your screen.
