For importing a Revit model to Lumion, you would need to first export it to COLLADA and .dae file format.
Download Lumion plugin here: https://support.lumion.com/hc/en-us/a...
Download Lumion software here: https://support.lumion.com/hc/en-us/a...
I am using a student license for Revit 2022 and Lumion Pro 12.3.1 through my university affiliation.
Good luck!
Arghavan