To dream of grapes represents plentifulness, opulence, success, or hard work that pays off. Enjoying feelings about how easy to have something is.
Example: A woman dreamed of seeing 2 clusters of grapes on her belly. In waking life finally got pregnant after trying really hard to conceive.
Example 2: A man dreamed of eating green grapes and getting great pleasure from it. In waking life he had a lot of time off work and nothing important to do. He enjoyed the time off, but felt lazy.