The word(s) "should" appears 194 time(s) in 173 verse(s) in Quran in Mohsin Khan translation.

(121) Make not the calling of the Messenger (Muhammad صلى الله عليه وسلم) among you as your calling one of another. Allah knows those of you who slip away under shelter (of some excuse without taking the permission to leave, from the Messenger (صلى الله عليه وسلم). And let those who oppose the Messenger's (Muhammad صلى الله عليه وسلم) commandment (i.e. his Sunnah - legal ways, orders, acts of worship, statements) (among the sects) beware, lest some Fitnah (disbelief, trials, afflictions, earthquakes, killing, overpowered by a tyrant) should befall them or a painful torment be inflicted on them.

(122) "And touch her not with harm, lest the torment of a Great Day should seize you."

(123) So invoke not with Allah another ilah (god) lest you should be among those who receive punishment.

(124) Till, when they came to the valley of the ants, one of the ants said: "O ants! Enter your dwellings, lest Sulaiman (Solomon) and his hosts should crush you, while they perceive not."

(125) And that I should recite the Qur'an, then whosoever receives guidance, receives it for the good of his ownself; and whosoever goes astray, say (to him): "I am only one of the warners."

(126) And if (We had) not (sent you to the people of Makkah) - in case a calamity should seize them for (the deeds) that their hands have sent forth, they would have said: "Our Lord! Why did You not send us a Messenger? We would then have followed Your Ayat (Verses of the Qur'an) and would have been among the believers."

(127) He has created the heavens without any pillars that you see, and has set on the earth firm mountains lest it should shake with you. And He has scattered therein moving (living) creatures of all kinds. And We send down water (rain) from the sky, and We cause (plants) of every goodly kind to grow therein.

(128) They think that Al-Ahzab (the Confederates) have not yet withdrawn; and if Al-Ahzab (the Confederates) should come (again), they would wish they were in the deserts (wandering) among the bedouins, seeking news about you (from a far place); and if they (happen) to be among you, they would not fight but little.

(129) O wives of the Prophet! You are not like any other women. If you keep your duty (to Allah), then be not soft in speech, lest he in whose heart is a disease (of hypocrisy, or evil desire for adultery) should be moved with desire, but speak in an honourable manner.

(130) It is not for a believer, man or woman, when Allah and His Messenger have decreed a matter that they should have any option in their decision. And whoever disobeys Allah and His Messenger, he has indeed strayed into a plain error.