Car will not recognize new battery

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You'll find thing's that you had no idea existed .

when a battery is completely drained, it shortens the life or could kill it all together. Time for a new one. Doesn't need to be coded.

Think the battery is dead. It is possible that the accident caused some damage to the wiring so that when you shut it down, the battery is being discharged.
Get battery charged and car running. then with car totally off hook up ammeter to battery and look for current draw. Then start removing fuses till you come across the circuit responsible for the draw and further troubleshoot that circuit for the offender. Till you find it leave fuse out so you can start car a few days later.

Humm ? Sat for six months? Check to see If your new battery Is charged . If It's charged check your main fuse change that
If still no power?
Check your battery cable contacts at the battery and clean them and where they are connected to the starter and the ground to the engine and body.... Still No power? Check for chip monk wire damage they love to nest in the wires

did u recently get a key made? I did this before and it wouldn't start because it wasn't compatible with the alarm system.

replace the alternator,this is the problem,please rate thank you.

do not suspect computer.
1 the new battery may not have been charged from the store so would need to be charged before use, charge new battery on a charging set and see if this resoves the problem. *or use slave leads and start from a second vehicle)
2 your alternator may not be charging the battery so after a while it will just die. use a volt meter and check that volage is increaseing to your battery when the engine is running.
if not suspect alterantor defective and may need replacement.

check the float on the carb is stuck shut not letting fuel in

sounds like the crank sensor do you know if you have spark now if not could be an ignighter.

try your spare key it sounds like the transponder in the key is going bad