Hood latch only works occasionally

If you can get it up. lube the catch mechanism, above and below. Lube the hood hinges at the rear of hood, work it up and down a few times before you try closing.
I hope you haven't bent anything at the rear hinge points, or the front catch?

There is no emergency latch. The best way to get it open is to remove the cable from the release latch in the footwell, then use a pair of pliers to pull the cable and open the hood. You might even have to strip the cable covering back a little to get to the cable.

Have a helper push down on the hood close to where the latch is. You, under the front bumper, look up at dead center of hood. If you can see and reach the latch where the cable attached, either grab it with pliers and pull latch in same direction as the cable would and tell your helper to stop pushing down and the hood should pop up. A long screwdriver to pry the latch might work if you can't grab it with pliers.

the hood latch is out of adjustment loosen three bolts and pry latch up retighten bolts also check cable isnt stuck in the open position spray with lube

What I would do is spray both the latch and release cable end with a good penetrating fluid. Be quite liberal with it and work the latch open and closed and the cable until both move freely and easily. It may take more than one application of fluid to achieve this. Once it is working freely the spray both with a good lubricant, preferably one with "white lithium grease" in it. Work it into the latch and cable and that should solve your problem. Then once or twice a year give them another application to keep them working. Hope this helps.

You should be able to remove the grill and reach in and use a screwdriver to slide the clasp over.

Could be that the latch is already latched, or just needs a little lube (wd-40 works great) Have someone pull the hood release and look at the latch see if it moves or if it look to be closed you can ulatch it with a pen or pencil while someone pulls the hood release if that is the case.

Cable is sticking, look at hood latch and push down on the thin cable. It will allow the hood to shut. my 96 Accord does the same thing.

A hood release works with a cable that pulls the latch open. if you have a long flat head screw-driver you can try to spring the latch itself through the front grill.