How did you initially get in contact with Apple Support, and did any if this require you to provide an Apple ID and the associated password? Through a link somewhere here on the Apple web site, or via the list of Apple telephone numbers, or by searching for unlocking in that hive of scum and villainy otherwise known as Google? Because you could well have been in contact with a scammer.
Here is the forgotten-password sequence: If you forgot your Apple ID password - Apple Support
Failing that, there’s: Recover your Apple ID when you can’t reset your password - Apple Support
If you are in the account recovery sequence, it will take as long as it takes.
Here’s the Activation Lock sequence:
Activation Lock for iPhone, iPad, and iPod touch - Apple Support
Turn off Activation Lock - Apple Support
Here’s the not-yours sequence:
How to request access to a deceased family member's Apple accounts - Apple Support
Inferring from your postings, it seems you’re in the account recovery sequence, and not the bypass-Activation-Lock sequence.
But in conclusion, it’ll take as long as it takes.