When was this book(?) of Enoch written? It’s not in the Bible. Nothing Enoch said is in the Old Testament. Only Jude 1:14-15 mentions his prophecy;
14 And Enoch also, the seventh from Adam, prophesied of these, saying, Behold, the Lord cometh with ten thousands of his saints,
15 To execute judgment upon all, and to convince all that are ungodly among them of all their ungodly deeds which they have ungodly committed, and of all their hard speeches which ungodly sinners have spoken against him.
That’s all we have in the Holy Scriptures, aside from his part of the lineage and how he was taken up by God without having to die.
It is from the Apocrypha, which was included in the Latin Vulgate Bible until very recently. The Apocrypha doesn’t carry the guarantee that events it describe will happen for certain, the way the Bible does.
The Apocrypha is interesting as it predicted neo-natal technology (even more advanced than today) and a possible meteor storm affecting the whole world.