Unity - 3D Static Skybox in Under 2 Minutes

Skybox Resource 1: polyhaven.com/hdris/skies
Skybox Resource 2: ambientcg.com/list?category=&date=&createdUsing=&basedOn=&q=+sky+&method=&type=HDRI&sort=Popular
Skybox Resource 3: itch.io/game-assets/tag-skybox