Wait time for resetting Apple Id account
This is part of Apple anti-fraud and anti-takeover, so you should expect to wait the full time since that’s designed into the system to allow the owner of the email to react to the request to reset that triggered the extra protection.
Next time, If you call into support you might get more guidance on the process or avoid having it go into a “need to check with the devices and emails” registered state.
When the time has passed you will have enough information to either complete the process assigned (we can’t guess the state your account is - only Apple Support can tell you that) or to advise you wait 3 more hours and then contact Apple support if you think the agreed time has passed.