What thread mount does the Nikon FE2 have?

I'm confused what the thread mount is for my film camera.

Also, I want to buy a close-up filter for my lens. I have a 36-72mm Nikon lens, which lens filters will fit this lens?

Any nikon SLR or DSLR has a thread mount of whatever lens is on it. According to http://www.photosynthesis.co.nz/nikon/lenses.html#35-xx the 36-72 has a 52mm. Nikon and Canon make closeup filters as does raynox.

The FE2 itself will take Nikon Ai and Ai-s lenses as well as AF and AF-D lenses but nothing AF-G

Look under the front lens cap. That's the filter size for that lens.