There isn't a visualize sound effects option in stw : r/FORTnITE
How to turn on footsteps in Fortnite Chapter 3 Season 1
How to turn on Visual Sound Effects on Fortnite | Visual audio settings in Fortnite, explained - Dot Esports
Fortnite animal locations and where to find wolves, boars, chickens, crows, and frogs in Fortnite | Eurogamer.net
How to turn on Visual Sound Effects on Fortnite - Pro Game Guides
Visual sound effects do not appear sometimes with chests after the most recent fortnite update. It happens when an enemy is gliding too however this happened before the most recent update :
How to turn on Visual Sound Effects in Fortnite - Gamepur
Entirely regardless of your opinion on the game itself, Fortnite's Audio Visualizer system is an absolute GODSEND for hearing-impaired gamers and should be in pretty well every game where audio is important