Export your SketchUp model as DAE or FBX, import into Blender, and render with (path tracer) or Eevee (real-time). This two-step workflow is surprisingly fast on M-series Macs.
An open-source, physically-based renderer that can integrate with various 3D platforms. Conclusion
Now, we know what you're thinking: "How can I get V-Ray for SketchUp on Mac for free?" While we don't condone piracy, we understand that sometimes, budget constraints can be a challenge. If you're looking to try V-Ray for SketchUp on Mac without committing to a purchase, you can try using a torrent.
Chaos gives when you sign up. While not a full V-Ray license, you can: