You can find physical copies at major retailers like Amazon or Walmart , which often provide the convenience of "plug-and-play" without large downloads.
The Switch release is more than just a port; it includes significant upgrades over the original Wii U version: Bowser's Fury - New Gameplay Today (Super Mario 3D World) super mario 3d world rom iso nintendo switch download link
Rather than risking your hardware or personal data with unofficial ROM or ISO files, you can safely acquire the game through the following methods: You can find physical copies at major retailers