Check the Catechism around #675, it has some good stuff about how the Church sees the book of Revelation.
In particular, it says the Church will go through a great apostasy:
Before Christ’s second coming the Church must pass through a final trial that will shake the faith of many believers. 573 The persecution that accompanies her pilgrimage on earth 574 will unveil the “mystery of iniquity” in the form of a religious deception offering men an apparent solution to their problems at the price of apostasy from the truth. The supreme religious deception is that of the Antichrist, a pseudo-messianism by which man glorifies himself in place of God and of his Messiah come in the flesh. 575