Apparently, what we call 'the book of Enoch' today includes some sections of fake scripture, but we shouldn't throw out the genuine with the fake.
"The Book of Enoch is quoted by church fathers and rabbis alike, all the way back to the first century.
The Ethiopic version of Enoch (called 1 Enoch) was considered the real Book of Enoch and it contained real prophecy [and] was considered recommend reading much like the Ancient Book of Jasher.
What we know today as 2 Enoch and 3 Enoch were never considered real by either the church or the ancient rabbis."
https://www.scribd.com/document/272778669/Ancient-Book-of-Enoch-Johnson-Ken
Full book "Ancient Book of Enoch" by Ken Johnson available at this link.