where do I find my wpa2 password

Where you wrote it down because you know you would forget so you have a log book for all your passwords, pin numbers, key values, etc. Just pull the book out and look it up.

In this day and age most of us have far too many passwords and pin numbers to remember without some secure logging or some method .. software or old fashioned to store them.

The Apple router by default has no wireless password.. if it has a password now .. you or another user in your household set it.

If you are trying to recover it.. see Tessarex documents..

Regain access to forgotten passwords. here.

https://discussions.apple.com/community/wireless/airport?view=documents

If you haven't created one.. you make it up.. do it now.. 10-20 characters mix of upper and lower case and numerals.. whatever you like.

or

Reset the apple router if you have forgotten the password and cannot use the keychain in the same computer to recover it..

All reset on the router allow you to replace the password.

Just login to the router via airport utility using ethernet and fix it. Or reset it and fix it.

The WPA2 password is blank.. did you try that??

Setup the password by using ethernet.. this is often necessary because Apple make the airport utility do dumb things.. with ethernet plugged in open the airport utility.. click on the airport extreme and click edit on the page that opens.. go to the wireless tab and set a WPA2 Personal password.

uh, once I've connect with my server, I'm asked for a WPA2 password, to continue but I don't have

now what?

Sorry, but that is just not enough information in order for us to be able to assist you with a potential solution.

Writing an effective Apple Support Communities question - John Galt (ASC Member)