Unfortunately for you the Quran says the Bible is not corrupted

Torah – “We gave Moses the Book and followed him up with a succession of messengers,” (Sura 2:87).1

Psalms – “We have sent thee inspiration, as We sent it to Noah and the Messengers after him: we sent inspiration to Abraham, Isma’il, Isaac, Jacob and the Tribes, to Jesus, Job, Jonah, Aaron, and Solomon, and to David We gave the Psalms,” (4:163).

Gospel – “It is He Who sent down to thee (step by step), in truth, the Book, confirming what went before it; and He sent down the Law (of Moses) and the Gospel (of Jesus) before this, as a guide to mankind, and He sent down the criterion (of judgment between right and wrong),” (3:3).
Also, “And in their footsteps We sent Jesus the son of Mary, confirming the Law that had come before him: We sent him the Gospel: therein was guidance and light, and confirmation of the Law that had come before him: a guidance and an admonition to those who fear Allah,” (5:46)

You claim that the Bible is corrupted and full of contradictions. If that is so, then it would seem they do not believe the Qur’an since the Qur’an says that the Word of God cannot be altered:

“Rejected were the messengers before thee: with patience and constancy they bore their rejection and their wrongs, until Our aid did reach them: there is none that can alter the words (and decrees) of Allah. Already hast thou received some account of those messengers,” (6:34).
“The word of thy Lord doth find its fulfillment in truth and in justice: None can change His words: for He is the one who heareth and knoweth all,” (6:115).
“For them are glad tidings, in the life of the present and in the Hereafter; no change can there be in the words of Allah. This is indeed the supreme felicity,” (10:64).
When Muhammad (570-632) was alive, he claimed to receive the revelation of the Qu’ran from Allah. This means that at that time the Bible, which was in existence, could not have been corrupted because the Qu’ran states that God’s word cannot be corrupted.

The question I have for the you is “When and where was the Bible corrupted since the Qu’ran says that the Torah, the Psalms, and the Gospel are from Allah and Allah’s words cannot be changed?”