Manual Tranny filler/check bolt stuck

I have a 90 accord ex and i was trying to change my manual tranny fluid when i realized that the fill/check bolt is stuck. I had already drained the fluid already but when i was about to fill it up i realized the bolt is torqued on really really really tight. Ive been trying to get it off for an hour and got no place except for damaging the bolt a lil bit. I used the correct size socket and also a wrench but it still wont come off. Any tips? Is there another way to fill up the fluid? Im screwed cuz the tranny is empty! HELP ME PLEASE!

Depending on how much room you have to work with, you may be able to use an impact, or a socket wrench with a pipe over the end to get more torque. I would try using something like WD-40 and letting it soak in a bit before you try again.