Radio is locked 2004 honda accord

In my 04 Accord, the radio code is on a sticker in my glovebox, on my driver's B pillar and in the trunk on the left arm that holds the trunk lid.

you have to go to the dealer they will give you the code if you own the car. Im not sure if they will do it over the phone.

First look in the owners manual....hopefully the unlock code is written in there.
Push 1 and 6 on the radio ....maybe the code will show....if not put it in after 1 and 6 are pushed if it was in the book.
Otherwise it is available at the dealer or on the internet.
Google radio codes.
Once you have it write it in the owners manual.

Unless you can find, in your records or attached with the owners manual. You will need to bring it to the dealer for service. The dealership will be the only ones that will be able to help you with this problem unless you find the 4 digit code.