The word(s) "should" appears 389 time(s) in 321 verse(s) in Quran in Muhammad Habib Shakir translation.

(101) And that you should keep up prayer and be careful of (your duty to) Him; and He it is to Whom you shall be gathered.

(102) Then when he saw the moon rising, he said: Is this my Lord? So when it set, he said: If my Lord had not guided me I should certainly be of the erring people.

(103) And how should I fear what you have set up (with Him), while you do not fear that you have set up with Allah that for which He has not sent down to you any authority; which then of the two parties is surer of security, if you know?

(104) And do not abuse those whom they call upon besides Allah, lest exceeding the limits they should abuse Allah out of ignorance. Thus have We made fair seeming to every people their deeds; then to their Lord shall be their return, so He will inform them of what they did.

(105) And they swear by Allah with the strongest of their oaths, that if a sign came to them they would most certainly believe in it. Say: Signs are only with Allah; and what should make you know that when it comes they will not believe?

(106) Shall I then seek a judge other than Allah? And He it is Who has revealed to you the Book (which is) made plain; and those whom We have given the Book know that it is revealed by your Lord with truth, therefore you should not be of the disputers.

(107) And what reason have you that you should not eat of that on which Allah's name has been mentioned, and He has already made plain to you what He has forbidden to you-- excepting what you are compelled to; and most surely many would lead (people) astray by their low desires out of ignorance; surely your Lord-- He best knows those who exceed the limits.

(108) And do not eat of that on which Allah's name has not been mentioned, and that is most surely a transgression; and most surely the Shaitans suggest to their friends that they should contend with you; and if you obey them, you shall most surely be polytheists.

(109) Therefore (for) whomsoever Allah intends that He would guide him aright, He expands his breast for Islam, and (for) whomsoever He intends that He should cause him to err, He makes his breast strait and narrow as though he were ascending upwards; thus does Allah lay uncleanness on those who do not believe.

(110) And two of camels and two of cows. Say: Has He forbidden the two males or the two females or that which the wombs of the two females contain? Or were you witnesses when Allah enjoined you this? Who, then, is more unjust than he who forges a lie against Allah that he should lead astray men without knowledge? Surely Allah does not guide the unjust people.