Imported FBX or OBJ shows without grid and can't scale to fit scene

I reset the size so it’s 2m square with a scale of 1 and tried cutting and pasting into new file and export as other formats with same result. I can edit vertexs but no matter what I can’t make it fit the editor so I can use it in a scene or apply lighting.

…shows without grid…

So it’s smaller or bigger than the grid… Did you checked the dimensions in the N-panel ?