Can you show me a verse that say there Will be 2 or 3 Mankind's judge oN the last day?
I believe the answer to your question is found in this verse
Romans 2: 16 in the day when God will judge the secrets of men, according to my Good News, by Jesus Christ.
God will judge by Jesus.
Romans 2: 16 in the day when God will judge the secrets of men, according to my Good News, by Jesus Christ.
God will judge by Jesus.
One God, three persons.
(Important to remember here that "person" does not mean "human".)
Since the verse says that God will judge by Jesus, clearly it isn't saying that Jesus will judge by Jesus, since that doesn't make sense.
So it is some other person of the trinity who is judging by Jesus.