I can't figure out of the back seat in my 1998 toyota corolla lays down

I'm assuming yours is a saloon style body shape. The seats are not designed to drop like in a hatch back or an estate car so you will need to remove the rear seats completely. You remove the seat base pad first. Run your hand between the base of the cushion and the floor panel it rests on. You should find two positions where it is fastened down. These are large 'push in' clips so a good firm pull upwards should release them. This will reveal three screws across the bottom edge of the backrest cushion, left, right and centre. Remove these and the seat pad should swing out at the bottom and unhook across the top edge. This should give you access to the metal body panel separating the trunk from the rest of the car. There are holes in this panel so you should just need to push your way past the trunks carpet liner.
Refitting the seat pads is easy. Hook the back rest into place and if positioned correctly you three screw holes should line up nicely to refit the screws. Position the seat base pad back edge first then use the tips of your fingers to make sure the push in clips are lined up. Then simply use your body weight downwards to 'pop' the clips back in.

its the only thing my wife knows how to do, that's the gas tank. theres a fuel door opener on drivers side floor next to front of seat

Remove the same bolt off the other seat and take it to Autozone and get a new one.

I have a 1999 Toyota Corolla I need to get to my trunk from the backseat due to my truck lock been broke and the button don't work. Is there any way to get in the trunk without having to pull the lever?!

Your best bet would be an auto salvage yard. The dealer will likely be a little pricy. Hope this helps.

there is a fuse box under the dash on the drivers side. it is very hard to reach. it is located above your left knee when you are seated in the drivers seat. lay on your back, look up under the dash, use flashlight.

Check to see if there is a ripcord, it may look like a small strap like loop, pull it away from seat and move the seat to the lower position.

theres buttons on the top of the seat to let it be tipped down to get access to the boot yes you can do it

Open the back trunk, look near the top of the trunk, and pull the two black levers. They have a seat folding down symbol. That will release the locks to fold the back seat down.

would need car in front of me and my oil can in my hand to clean the mechanism of accumlated dirt around the springs and the whatever and a nice drop of real oil and not that fish oil od wd40