Raspberry Pi Pico 2 W GPIO Pinout

You can check out the full Raspberry Pi Pico 2 W Pinout at the page linked below.
Full Raspberry Pi Pico 2 W Pinout →

Notice that Ground (GND) pins are repeated after every 4 pins, and start after 2 pins in each end. Remembering this will make verifying the pin positions easier. The ground pins also have a square copper shape around the pin on the Pico board to make them easier to recognize.