The Book of Enoch (aka 1 Enoch) is a collection of different texts written at different times (between ~300 BC and ~100 AD) which claim to be written by the biblical figure of Enoch.
It’s actually 5 different books which were compiled sometime in the 2nd century into a single work. It is sometimes known as 1 Enoch, because there are even more Enochian texts (texts in the Enoch tradition), but it is usually just called the Book of Enoch.
It’s not a recently discovered text, it’s been known and talked about over the centuries, though archeological work has discovered old Greek manuscripts, and it has chiefly been preserved in an Ethiopic translation among the Ethiopian Orthodox Christians.
As it is made up of five different works, its contents include very different subjects. It includes a story of fallen angels, it contains an apocalyptic where Enoch is shown visions of the heavens, it contains parables and moral instruction, and many other things.
This Enoch literature was well known in the first century, among Jews and early Christians. And was popular enough that it is directly quoted at least once in the New Testament (Jude 1:14-15) but it was never widely accepted as Canonical, and therefore never appears in Canonical lists in the early Church. Only the Ethiopian Orthodox Church ever accepted it as part of its broader biblical tradition.
It’s not Scripture. It’s historically fascinating because it provides insight into Jewish ideas of the 2nd Temple period, and ideas in it did have some influence in Jewish and Christian thought–but the books/book itself has never been recognized or confessed as divinely inspired Scripture; and so we shouldn’t treat it that way. It very much was not written by the biblical Enoch, as it was written between ~300 BC and 100 AD. 2nd Temple Jewish literature is important for historical reasons, providing historical context to what we read in the New Testament–the ideas which shaped Judaism, and Jesus’ world, so we can better understand what Jesus and the Apostles are saying by understanding the history of the time.
But outside of its historical value, it does not have spiritual value for Christians. It’s not Scripture, it’s not part of the Bible. While there have always been questions and debates about the Biblical Canon in Christian history; these debates have always been narrowly focused on very specific texts (e.g. the Deuterocanonical books, aka the books which Catholics and Orthodox include in the Old Testament but which are not in most Protestant Bibles). It is not a free-for-all where we can look at the literal smorgasbord of ancient texts and pick and choose which we think should be in the Bible or not. The Bible is the Bible.
I believe all Christians can benefit by studying the history of how the Biblical Canon came to be, why our Bible looks the way it does. Because it is not only very interesting and challenges us to give up certain wrong preconceptions and misconceptions about God’s word; but even more it actually teaches us to have more confidence in Scripture. The Bible didn’t fall out of the sky, but also, it’s not arbitrary. The history of the Canon, I believe, actually shows both the careful thinking of faithful Christians and the guidance of the Holy Spirit throughout the history of God’s People.