Screws? Yep…they were there.
This should do it…note the fuse value required by the original piece, and you will need one of those too.
or
Measure your opening.…and quick connect size.Awesome, Sir!!!!!
TMI! TMI! ...Measure your opening.…and quick connect size.

According to the parts list for that amplifier, it is part number 0072791000, **IEC INLET W/ FUSE B/GDEC 30.
Perhaps you can order from Fender.