Stars in a dream usually point to guidance and aspiration -- a distant goal you're orienting yourself by, even if you can't yet see the whole path there. Countless stars filling the sky can reflect a hopeful sense of possibility, while a single, hard-to-find star may mirror a direction you're still searching for.
The darkness of night and immobility interrupt the spirituality of diurnal celestial bodies; each star must be used in its own form. - Picatrix (Andalusia, ~1000.AD)