Hypothetically, would we be able to see the moon from Saturn's North Pole?
Yes, if you observe Earth and the Moon at a favorable time.
Near a Saturn summer solstice, e.g. between 2012 and 2022, Earth appears well above the horizon from Saturn's north pole.
If the planet body is out of the way, so are the rings.
The other observability issue is Earth's elongation from the Sun.
This reaches a maximum of about 6$^\circ$ at intervals of about 189 days, e.g. late September 2018 or early April 2019.
Even then, you would need to shade your optics from the Sun and be above Saturn's atmosphere.