The meaning of dreaming that you're a billionaire is related to your wishes. The dream may be an inspiration for you to work more. Alternatively, the dream's interpretation is related to your inadequacies and shortcomings. There is a void in your life.
You may look in dreams interpretation for other symbols :
Bird : The meaning of seeing birds in your dream symbolizes your goals, aspirations and hopes. The meaning of dreaming about birds chirping and / or birds ... ">ml">
Birth : If you dream that you or someone else gives birth, the interpretation is that you give birth to a new idea or project. The dream also represents a new attitude, ...