>>289547394
There's some basic skill transfer from avatars to worlds, but it's mostly a different beast. More rewarding to make maps, but there's a larger time investment and an expectation that you'll update it later. You can get by with dragging and dropping assets you found on the internet into a scene, so I'd say it has a lower skill floor.

If you want to get started, I'd recommend checking out https://www.models-resource.com/ and making a simple world by tossing assets from there into a unity scene and adding mesh colliders as needed. Also "acquire" Bakery (Unity plugin) as soon as you can to take care of lighting.