The word(s) "oneness" appears 187 time(s) in 175 verse(s) in Quran in Mohsin Khan translation.

(101) And indeed We sent Nuh (Noah) to his people, and he stayed among them a thousand years less fifty years [inviting them to believe in the oneness of Allah (Monotheism), and discard the false gods and other deities]; and the Deluge overtook them while they were Zalimun (wrong-doers, polytheists, disbelievers).

(102) And thus We have sent down the Book (i.e. this Qur'an) to you (O Muhammad صلى الله عليه وسلم), and those whom We gave the Scripture [the Taurat (Torah) and the Injeel (Gospel) aforetime] believe therein as also do some of these (who are present with you now like 'Abdullah bin Salam) and none but the disbelievers reject Our Ayat [(proofs, signs, verses, lessons, etc.,) and deny Our oneness of Lordship and Our oneness of worship and Our oneness of Our Names and Qualities: i.e. Islamic Monotheism].

(103) Say (to them O Muhammad صلى الله عليه وسلم): "Sufficient is Allah for a witness between me and you. He knows what is in the heavens and on earth." And those who believe in Batil (all false deities other than Allah), and disbelieve in Allah and (in His oneness), it is they who are the losers.

(104) And those who believe (in the oneness of Allah - Islamic Monotheism) and do righteous good deeds, to them We shall surely give lofty dwellings in Paradise, underneath which rivers flow, to live therein forever. Excellent is the reward for the workers.

(105) And who does more wrong than he who invents a lie against Allah or denies the truth (Muhammad صلى الله عليه وسلم and his doctrine of Islamic Monotheism and this Qur'an), when it comes to him? Is there not a dwelling in Hell for disbelievers (in the oneness of Allah and in His Messenger Muhammad صلى الله عليه وسلم)?

(106) Then as for those who believed (in the oneness of Allah - Islamic Monotheism) and did righteous good deeds, such shall be honoured and made to enjoy luxurious life (forever) in a Garden of Delight (Paradise).

(107) (And remain always) turning in repentance to Him (only), and be afraid and dutiful to Him; and perform As-Salat (Iqamat-as-Salat) and be not of Al-Mushrikun (the polytheists, idolaters, disbelievers in the oneness of Allah).

(108) Say (O Muhammad صلى الله عليه وسلم): "Travel in the land and see what was the end of those before (you)! Most of them were Mushrikun (polytheists, idolaters, disbelievers in the oneness of Allah)."

(109) That He may reward those who believe (in the oneness of Allah - Islamic Monotheism), and do righteous good deeds, out of His Bounty. Verily, He likes not the disbelievers.

(110) Thus does Allah seal up the hearts of those who know not [the proofs and evidence of the oneness of Allah i.e. those who try not to understand true facts that which you (Muhammad صلى الله عليه وسلم) have brought to them].