Jeez. That head looks awful tiny in Blender. Using Mudbox I have to scale up the obj to 2000 in order for the sculpting tools to work properly, Poser meshes are TINY. Before you go scaling the mesh in Blender's object properties make sure the object is selected in the scene collection and hit the dot ( . ) key. No need to scale here, the dot key will zoom the viewport camera to the selected object.

If you want to see the wires, go to object properties and check Wireframe in Viewport Display

Want smooth shaded preview? Right click the mesh and in the object context menu click Shade Smooth.

Want to adjust the viewport preview camera? The default has a bit of perspective distortion at a default focal length of 50 mm. Hit the n key, go to the view tab, and change the focal length to 100 mm. Hit n key again to banish the sidebar flyout.