To dream of telling, or having your fortune told, it dicates that you are deliberating over some vexed affair, and you should use much caution in giving consent to its consummation.
For a young woman, this portends a choice between two rivals. She will be worried to find out the standing of one in business and social circles.
To dream that she is engaged to a fortune-teller, denotes that she has gone through the forest and picked the proverbial stick. She should be self-reliant, or poverty will attend her marriage. ... Ten Thousand Dream Interpretation
To dream that you have your fortune told in a dream, either by astrology, palm reading, tarot or crystal ball, suggests that your current situation feels uncertain and you are in need of guidance. You may also have an important decision to make in waking life but the message of your dream is that there is no easy answer and that hasty decisions should not be made.... The Element Encyclopedia