A wallet is read as self-worth and identity as much as money. Dream books link a full wallet to confidence in your resources and an empty one to feeling drained or undervalued. Finding a wallet is usually read as discovering a resource or quality you did not know you had, while returning it to its owner points to honesty and integrity. A stolen wallet is linked to feeling taken advantage of. Handing your wallet over stands for generosity, or for giving away too much of yourself. It can help to ask what you feel you are carrying and how you value it.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.