The Starship HLS to reach the Moon will need to be refueled from two fuel depots (which will need to be refueled by Starship tankers multiple times - NASA says 20 times and SpaceX "ten-ish"). The one fuel depot will be in low Earth orbit (specifically, its orbit will have a perigee of 181 km and an apogee of 381 km) and the other one in medium/high Earth orbit (no additional information was provided).
The document also mentions some other information about the Starship HLS, such as that it will have 4 parabolic reflector antennas, the astronauts in their EVA suits will be able to communicate with the Starship HLS up to 2 km away from it, and that it will have two lunar landing randars that will be activated 4 km above the surface of the Moon and will operate for 5 minutes until landing.