The Catholic Church at the Council of Rome formally defined what books were considered authentic and which ones were not (and this list was, with some reduction, also used by Protestants). The Book of Enoch was a bit contentious because of the quotation in an inspired book - but it was ultimately determined to be not inspired, and the quotation not necessarily either. (I.e. Imagine if scripture quoted a Roman decree - the decree is not inspired in spite of the quote.)
Despite this, the Book of Enoch and other rejected books do appear in some Bibles, with a warning about how they are apocryphal. Just because they aren’t inspired though (officially-speaking) doesn’t mean they can’t be interesting.
Despite this, the Book of Enoch and other rejected books do appear in some Bibles, with a warning about how they are apocryphal. Just because they aren’t inspired though (officially-speaking) doesn’t mean they can’t be interesting.