Patches for the game are typically handled automatically through the official launchers where you purchased the game.
If you are looking for this file on third-party sites rather than official stores like Steam or Epic Games, be extremely cautious: File: Before.We.Leave.v1.0035.zip ...
This specific build number usually indicates a "hotfix" or minor patch released after a major update to resolve bugs or stability issues. Patches for the game are typically handled automatically