His face is up on the bulletin board with a reward
A “bulletin board” is something that’s hanged on the wall with a picture of the criminal’s face on a ‘’wanted poster‘’, so people know what he looks like. Just to be cautious if they see him and report to the police of his whereabouts.
By reward he means how much money they get for telling the police of his location.
To help improve the meaning of these lyrics, visit “Backstabber” by Eminem Lyrics and leave a comment on the lyrics box