Vam uses ONLY "genesis 2" models. In very general terms, you would have to import the model into Daz and convert it to a genesis 2 female. Then merge all the morphs into a single morph. Then copy that morph and the models skin textures over to your vam morphs and textures directories. Then add a person, load the morph and textures, and save the appearance.
I have no idea if this model conversion would actually be possible
In unity, all you could do would be to turn the model into a custom unity asset, which could then be used in the game. But that would result in a static, unalterable statue rather than a Vam person model.