Are Job and Jobab the same person? Is there anywhere in the bible that says Job and Jobab is the same person?
Is there anywhere in the bible that says Job and Jobab is the same
person?

Yes and no.
Roman Catholic and Protestant Bibles finish the Book of Job with the death of Job at a great age in chapter 42 verse 17.
However the Septuagint, a Greek translation of the Jewish scriptures, has an additional passage known as the Postscript. This additional passage is also in the Russian Orthodox Bible.

and it is written that he will rise again with those whom the Lord raises up. This man is described in the Syriac book living in the land of Ausis, on the borders of Idumea and Arabia: and his name before was Jobab; and having taken an Arabian wife, he begot a son whose name was Ennon. And he himself was the son of his father Zare, one of the sons of Esau, and of his mother Bosorrha, so that he was the fifth from Abraam. And these were the kings who reigned in Edom, which country he also ruled over: first, Balac, the son of Beor, and the name of his city was Dennaba: but after Balac, Jobab, who is called Job, and after him Asom, who was governor out of the country of Thaeman: and after him Adad, the son of Barad, who destroyed Madiam in the plain of Moab; and the name of his city was Gethaim. And friends who came to him were Eliphaz, of the children of Esau, king of the Thaemanites, Baldad sovereign the Sauchaeans, Sophar king of the Minaeans.

According to this Postscript Job and Jobab were one and the same person.