If the model you create in other views can be viewed in perspective.
Then you can click the "+"in the upper left corner of the viewport? In the pop-up viewport settings, switch to the background panel and choose to use the custom interface to gradually change the color.
If the model created in other views cannot be viewed in the perspective view, there may be a problem with the display driver of the graphics card or software.
Please try to update the graphics driver to the latest version, and then change the display driver mode in Customize-Preferences-Viewport (here I use the Nitrous mode recommended by the software).