To answer that question, we have to factor in two variables:
- The amount and ways of interaction with the scene. Training sequences with multiple steps that involve interaction take longer to design and develop. And the other way round: introducing semi- or non-interactive 360° videos cuts development time.
- The types and number of 3D objects in the scene. The more 3D content in the scene and the more realistic (or hyper-realistic) its quality, the longer it takes to build.
These approximations should give you a better idea:
- Creating a simple 360° video with no interactions takes about 3 weeks
- A complex 50+ steps training routine can be developed in up to 3 months