Metaverse app development using Unreal

I would like to create an MVP product for our healthcare sector.
Please find below the requirements.

  • There should be an metaverse app where doctor and patient will be connected by login.
  • The doctor and patient will be connected remotely through an occulus device in the metaverse (say, one hospital room) by choosing their own avatars.
  • The doctor can view patient details and explain his health problems by showing 3D models (for example, heart, brain, and internal).

I would like to know few details as i am completely new to Unreal & Metaverse.

  1. Do you suggest Unreal or Unity, and why?
  2. Let us know how to solve this. Need some technical details like how to start and what we have to use