To help protect you from enemies instead, you’ll get faster movement and a new overshield.
Taken from Engadget … Fortnite Chapter 3, Season 2 is underway and this time around Epic has temporarily ditched one of the game’s core mechanics: building. Your harvesting tool will still destroy objects, but you won’t receive any wood, stone or metal to create a temporary base or instantly build a barrier to protect yourself from enemy fire.
Building will still be available in competitive, creative and Save the World modes — it’s only gone in casual queues for now. It seems that restoring builds will be a key part of this season’s storyline (at least in the early going).
To make up for the lack of building (and last season’s excellent web shooters being removed), Epic Games has added some more movement mechanics. The default run is now faster, and you’ll be able to sprint even more quickly for short bursts. If you sprint at or slide into a door, you’ll bust it open. Also new is the ability to mantle onto ledges that are just a little too high to land on with your feet.
In addition, players now have an overshield on top of their health and regular shield, giving them 50 extra shield points. When an enemy attacks, your overshield will be depleted first. Unlike health and shields, your overshield will recharge by itself.
Source: Engadget
