The word(s) "repent" appears 115 time(s) in 99 verse(s) in Quran in Mohsin Khan translation.

(21) When those who believe in Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) come to you, say: "Salamun 'Alaikum" (peace be on you); your Lord has written (prescribed) Mercy for Himself, so that if any of you does evil in ignorance, and thereafter repents and does righteous good deeds (by obeying Allah), then surely, He is Oft-Forgiving, Most Merciful.

(22) And We sent no Prophet unto any town (and they denied him), but We seized its people with suffering from extreme poverty (or loss in wealth) and loss of health (and calamities), so that they might humiliate themselves (and repent to Allah).

(23) And when Musa (Moses) came at the time and place appointed by Us, and his Lord (Allah) spoke to him; he said: "O my Lord! Show me (Yourself), that I may look upon You." Allah said: "You cannot see Me, but look upon the mountain; if it stands still in its place then you shall see Me." So when his Lord appeared to the mountain , He made it collapse to dust, and Musa (Moses) fell down unconscious. Then when he recovered his senses he said: "Glory be to You, I turn to You in repentance and I am the first of the believers."

(24) And when they regretted and saw that they had gone astray, they (repented and) said: "If our Lord have not mercy upon us and forgive us, we shall certainly be of the losers."

(25) But those who committed evil deeds and then repented afterwards and believed, verily, your Lord after (all) that is indeed Oft-Forgiving, Most Merciful.

(26) And a declaration from Allah and His Messenger to mankind on the greatest day (the 10th of Dhul-Hijjah - the 12th month of Islamic calendar) that Allah is free from (all) obligations to the Mushrikun (See V.2:105) and so is His Messenger. So if you (Mushrikun ) repent, it is better for you, but if you turn away, then know that you cannot escape (from the Punishment of) Allah. And give tidings (O Muhammad صلى الله عليه وسلم) of a painful torment to those who disbelieve.

(27) Then when the Sacred Months (the 1st, 7th, 11th, and 12th months of the Islamic calendar) have passed, then kill the Mushrikun (See V.2:105) wherever you find them, and capture them and besiege them, and lie in wait for them in each and every ambush. But if they repent and perform As-Salat (Iqamat-as-Salat), and give Zakat, then leave their way free. Verily, Allah is Oft-Forgiving, Most Merciful.

(28) But if they repent, perform As-Salat, (Iqamat-as-Salat) and give Zakat, then they are your brethren in religion. (In this way) We explain the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) in detail for a people who know.

(29) And remove the anger of their (believers') hearts. Allah accepts the repentance of whom He wills. Allah is All-Knowing, All-Wise.

(30) Then after that Allah will accept the repentance of whom He wills. And Allah is Oft-Forgiving, Most Merciful.