Spiral design in Adobe Dimension

I don't think you can directly in Dimension since it's not part of a standard shape, you will need to build it yourself, Using a modeler (Dimension is just a stager, so more limited) . You can try using the 3D features within Illustrator, or use a bona fide modeler, such as Substance Modeler, or Blender.

Another way would be to find ready made models, such as this one, I found on the free section of Adobe Stock

but you can also try in Adobe Substance assets
https://substance3d.adobe.com/community-assets

or

https://substance3d.adobe.com/assets
or one of the many platform where you can buy .obj models