Start at Mzithumz Wayshrine and follow the road above it to the east. There are many hostile NPCs in this area, so be careful. As you follow the road you will eventually come to a building carved into a cliff. The skyshard is slightly to the right of the entrance into this building, surrounded by broken stone blocks.
As you approach the entrance into the building you’ll notice the collectible immadiately to the right
The location of the area on the world map where this skyshard is located. Just follow the road until you reach its end.
Large stone blocks surrounding the skyshard.
Sand Kingdom Moons - Super Mario Odyssey Power Moons