If you are using the Universal Render Pipeline, a setting that can produce this issue is the Layer your GameObject is set to could be filtered out in the Filtering property of the default Universal Renderer Data.

The Scene View uses the default Universal Renderer Data set in the URP Asset's Renderer List for it's Renderer settings.

In your URP Asset, double click the first Universal Renderer Data asset in the Renderer List to open it in the Inspector.

Under Filtering, check the Opaque Layer Mask and the Transparent Layer Mask to ensure the Layer your GameObject that is not rendering is checked on, or set the filter to Everything.

See the Unity Manual - Universal Renderer asset reference for URP page for more details on the Filtering property.