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

(11) So, as for those who believed (in the oneness of Allah - Islamic Monotheism) and did deeds of righteousness, He will give them their (due) rewards - and more out of His Bounty. But as for those who refused His worship and were proud, He will punish them with a painful torment. And they will not find for themselves besides Allah any protector or helper.

(12) Made lawful to you this day are At-Tayyibat [all kinds of Halal (lawful) foods, which Allah has made lawful (meat of slaughtered eatable animals, milk products, fats, vegetables and fruits)]. The food (slaughtered cattle, eatable animals) of the people of the Scripture (Jews and Christians) is lawful to you and yours is lawful to them. (Lawful to you in marriage) are chaste women from the believers and chaste women from those who were given the Scripture (Jews and Christians) before your time when you have given their due Mahr (bridal-money given by the husband to his wife at the time of marriage), desiring chastity (i.e. taking them in legal wedlock) not committing illegal sexual intercourse, nor taking them as girl-friends. And whosoever disbelieves in Faith [i.e. in the oneness of Allah and in all the other Articles of Faith i.e. His (Allah's) Angels, His Holy Books, His Messengers, the Day of Resurrection and Al-Qadar (Divine Preordainments)], then fruitless is his work; and in the Hereafter he will be among the losers.

(13) Allah has promised those who believe (in the oneness of Allah - Islamic Monotheism) and do deeds of righteousness, that for them there is forgiveness and a great reward (i.e. Paradise).

(14) Surely, those who believe (in the oneness of Allah, in His Messenger Muhammad صلى الله عليه وسلم and all that was revealed to him from Allah), and those who are the Jews and the Sabians and the Christians, - whosoever believed in Allah and the Last Day, and worked righteousness, on them shall be no fear, nor shall they grieve.

(15) Say (O Muhammad صلى الله عليه وسلم): "Shall I take as a Wali (Helper, Protector, Lord or God) any other than Allah, the Creator of the heavens and the earth? And it is He Who feeds but is not fed." Say: "Verily, I am commanded to be the first of those who submit themselves to Allah (as Muslims)." And be not you (O Muhammad صلى الله عليه وسلم) of the Mushrikun [polytheists, pagans, idolaters and disbelievers in the oneness of Allah]. (Tafsir Al-Qurtubi)

(16) It is those who believe (in the oneness of Allah and worship none but Him Alone) and confuse not their belief with Zulm (wrong i.e. by worshipping others besides Allah), for them (only) there is security and they are the guided.

(17) Say: "With Allah is the perfect proof and argument, (i.e. the oneness of Allah, the sending of His Messengers and His Holy Books to mankind); had He so willed, He would indeed have guided you all."

(18) But those who believed (in the oneness of Allah - Islamic Monotheism), and worked righteousness - We tax not any person beyond his scope - such are the dwellers of Paradise. They will abide therein.

(19) Freedom from (all) obligations (is declared) from Allah and His Messenger (صلى الله عليه وسلم) to those of the Mushrikun (polytheists, pagans, idolaters, disbelievers in the oneness of Allah), with whom you made a treaty.

(20) And if anyone of the Mushrikun (polytheists, idolaters, pagans, disbelievers in the oneness of Allah) seeks your protection, then grant him protection so that he may hear the Word of Allah (the Qur'an), and then escort him to where he can be secure, that is because they are men who know not.