Help with Holybro Durandal GPS u-blox neo 7 M issue

1

Good evening and merry xmas alla. Im a newbie and and I’m not very practical. I’m trying to assemble my first drone. I purchased the Holybro Durandal flight controller and following the pinout I am trying to communicate with the u-blox neo 7 M GPS. In Ardupilot the GPS does not lock the position, I can’t even understand if the connection between the flight controller is actually and GPS is present. Can someone help me? Thank you