The sound of a doorbell in your dream is a means by which your inner self is trying to get your attention. Is there an opportunity knocking? Are you answering your “calling” in life? Or perhaps you need to “open up” and be honest about something or open up and let someone in to your trust zone.
To hear a bell ringing marks a new realization or awareness in your life. Can also point to something or someone from your past showing up again, something that “rings a bell” in your memory.