ebay or fixmyouclus.com, Aliexpress too

No you have to remove the screen assembly

Yes, the port is hidden by the lense/screen assembly

вы можете купить это на FixMyOculus.com

I don't know exactly but when I replaced my board this is what it looked like

If the problem of it not charging persists it is a motherboard issue

Shove your prying tool right in the sides (right and left, where the two arrows pointing inward are) and it pops right out (don't push too fast, just keep pushing until it pops out, i suggest using the flat end of a normal Ifixit spudger)

Not much you can do except drill it out.

Yes, if you are trying to get inside the lenses you have to remove everything.

The wifi is in on the top right of the motherboard (pic 5) and the bluetooth antenna is required for it to work, but is attached to the black piece at the bottom (pic 6)