[Egret]

I regard the Masoretic text as generally more authoritative, so I would give an age of the earth/cosmos in calendar years of approximately 6000 years.

[andsoitis]

The Catholic Church follows the scientific consensus that the Earth is billions of years old.

[Egret]

That is broadly true, although there are creationist organisations within the Roman Catholic world. The major creationist organisations are evangelical (Protestant).