To dream that you or someone is yelling, represents repressed anger that need to be expressed. If you are yelling and no one hears, then it suggests that you are being ignored. You feel that your voice does not matter or that your opinion doesn*t count.
To hear other people yelling in a dream foretells that you will hear bad news. However, if you dream of yelling yourself, it is a lucky omen.
Fear, distress, panic, trauma, or an attempt to alert others
Anger, frustration, or feeling powerless or overwhelmed
For more clues about meaning, pay attention to who's yelling and why—and then look for parallel events, fears, or anger in your life.