My mom had a dream, I dance really late in the night like 1 to 2 or 3 as that's the free time I have. So she got a dream of me dancing and lady watching me wearing a red and green dress and staring at me as I dance. What does this mean please answer quikly please!

It only means what your mother feels it means.
For me, red and green mean Christmas.
As an older woman myself, I might think that your mother is wondering when a young woman will fall in love with you and replace your mother in your heart.

Sounds like your mom is worried about your social life.