The Godhead is a term used to reference the three members of the triune office of divinity (the Father, the Son, and the Holy Spirit).
Positive: Dreaming of the Godhead is a visitation that involves an impartation. Whenever any of the members of the Godhead come to you in a dream, their natures are being revealed to you. Pay attention to their actions and words to see what they are imparting to you.
Negative: In a dream of the Godhead where you are feeling convicted and have the fear of God, you could be getting rebuked. God may be showing you your sins. You must repent and truly change, heeding their warnings.
(2 Peter 1:2-4; Acts 17:29-31).