Prospect currently does not support native files from Archicad.
However, if you are using Archicad and would like to use Prospect, it is still possible to do so by saving/exporting your Archicad file as a Sketchup file.
Read more about the file formats Archicad can import and export on their knowledge base, here.
Once it is saved as a Sketchup file, it is then possible to drag and drop it into the Prospect launcher for viewing in virtual reality with Prospect software.