Hi [A]

People is a collective nown if i am not mistaken. Do we consider it a plural nown or singular nown."Still people haven't or hasen't seen it yet". Please make some correction and let me know your valuable suggestions.

Thanking you

Yours trully, Himadri Roy
First, noun, not nown and hasn't, not hasen't

People can be
1) the plural of person; persons exists but is rather formal
2) a word meaning something like nation, ethnic group, etc. with a plural peoples
In general, [people] is perceived as a plural noun. So "Still people haven't seen it yet" is the orrect form.
 J Lewis's reply was promoted to an answer.