What does il faut really mean in English

Il faut means "it is necessary," so comme il faut means "as (it) is necessary" or, more idiomatically, "properly, respectably." Comme il faut can be used in reference to any sort of situation in which etiquette demandsIl [pronoun] faut + noun = to need [something] (Literally, it needs to me/ to him / to them OR it must to me/ to him/ to them) - Il [pronoun] faut + infinitive = to need to [do something] OR must / to have to [do something] a certain type of behavior