Can't see imported max file

I’ve imported a file from max by copying the file to the project assets folder.
I can see it in the project window. When I drag it into the scene, I can’t see anything.

Your file can be corrupted;

Check, after drag to the scence, if the object have a MeshRenderer, if the MeshRenderer have a Mesh.

Check the object tag (you can hide objects with certain tags);

Check if the object have a material, if the material has a shader, if the shader is a simple diffuse;

Check if you can see at least the wire of the mesh.