Dreaming about a 10 million dollars gift card for traveling the world, but realizing that someone else possesses it can symbolize feelings of desire and aspiration, as well as themes of envy or competition. Here are a few interpretations to consider:

1. Desire for Freedom and Adventure: The gift card represents your yearning for exploration and new experiences. Traveling the world can signify a longing for freedom or an escape from your current routine.
2. Feelings of Lack or Injustice: Seeing someone else with the gift card may suggest feelings of inadequacy or envy. You might feel that others have opportunities or advantages that you lack, which could be causing frustration in your waking life.
3. Opportunities and Potential: The dream could also reflect your awareness of the vast opportunities available to you. It might be a prompt to consider how you can create your own opportunities for travel or adventure, rather than relying on external gifts.
4. Exploration of Relationships: This scenario could also indicate feelings about relationships in your life. You may feel that someone close to you is receiving benefits or advantages that you desire for yourself.

Consider reflecting on your current life situation and whether there are areas where you're feeling limited or held back. This dream may be encouraging you to pursue your own paths and opportunities for growth and exploration.