1984 corvette hood release let go under hood,can,t open, don,t know where release is, can,t move battery dead,

Any chance you can remove front hinge bracket bolts?... then raise front of hood enough to get directly at the latch and release or unbolt the latch? or get penetrating oil into latch?

Maybe remove bumper or wheel wells or whatever to get to the hinge bolts.

Just trying to get you thinking of other ways in.

Have windshield removed to success the mechanism

What is wrong with hood release?
Sometimes I use vice-grips on hood release cable, have a helper standing at the end of the hood. At the same time you pull the release cable, have the helper pop the hood in area of release mechanism with palm of hand, sometimes that works to open hood. If you get it up, lube everything.
Some makes and models, I can remove front grille and reach the release mechanism. Don't know about your vehicle?

I think that the outer cable is loose from the clip. you will have top devise a way of coming up in front of the ac condenser to push the latch sideways as some one pushes down on the bonnet to release the latch

Changing the battery in the remote won't affect the programming, and neither should a dead car battery. I am surprised there is no keyed entry on the driver's door.

The release is under the dash to the left of the driver, reach under and pull the handle.

My 81 did that, cable has needs replaced under the hood. To open lift up hood on drivers side, slide hand under hood and pull cable where it hooks to latch.

I don't think there is an emergency hood release cable, However, a body shop may know a trick to getting it open for you without damaging anything.

on this car you will have to use a batt connected thru the fuse panle you will need to power the side of the panle with the hood fuse then all you will need to do is open the hood

Do you know the procedure for using a test light to pinpoint where draw in electrical system is?