The fake money dream is common when someone faces a certain type of situation in life. Like when you worked hard in a job, but you were not paid according to the amount of labor you put into it. During the day, you had thought about your situation. You know you have been cheated by a fake position that does not pay fairly. Your thoughts may trigger a dream about fake money, where what you were given in compensation was fake. Or your salary was scammed out of you and what you received was a fake token for your work.
Dreaming of fake money can be a message about a failed deal. For example, if someone ordered a stack of products and paid with a dud check, that dream is about fake money.