3D star maps would be a great application of VR.
https://store.steampowered.com/app/314650/SpaceEngine/
Titans of Space Plus is probably the most educational space VR program I've used. It takes you on a guided tour of our solar system and puts everything into perspective at various scales, including some other stars. But it's not a map of the stars very much. It does the best job of conveying the relative sizes of things.
https://store.steampowered.com/app/468820/Titans_of_Space_PL...
Universe Sandbox isn't a map either, but it's worth mentioning as as a VR astronomy program.
https://store.steampowered.com/app/230290/Universe_Sandbox/
I have not tried this one: https://store.steampowered.com/app/751110/OVERVIEW_A_Walk_Th...