How many books is in roman catholic?

if you are referring to their version of the Bible it has 77 books in it the Bible though has only 66 inspired books in it these extra non inspired books are not part of the original Bible cannon and are called apocrypha meaning spurious or uncanonical and of dubious historical value and have no solid foundation and appears some 300 years after the last inspired book of the Bible was completed in 96C.E. no reputable Bible scholar or any of the Apostles or especially Jesus him self ever quotes it or even refers to it like he does to the rest of the inspired writings also famous historians and lexicographers such as Origen of the early 3rd century C.E. Athanasius, Cyril of Jerusalem, Gregory of Nazianzus, and Amphilocius of the 4th century did not see them as Sacred or inspired writings and Jerome the best known Hebrew scholar of the early church and writer of the Latin Vulgate 405 C>E> did not include them but concluded that the Holy Writings consisted of 39 books of the Hebrew Scriptures and 27 of the Christian Greek Scriptures and nothing else so be warned against such says Jerome (pixilated)