I’m asking both in terms of back while those religions where being practiced as well as now in the form of recovered texts.
No.
While there were occasional attempts to compile definitive versions (from Hesiod to Apollodorus to Thomas Bullfinch), the reality of contemporary practice makes it impossible to put together a cohesive picture that would apply everywhere. Most of the narratives, beliefs, and practices would have been held in ever-changing oral tradition, anyway. What is known is put together from ancient texts (especially the older ones, such as Homer), later commentary (e.g. medieval scholiasts), artwork, and comparative data.
As far as a modern-day equivalent, even leaving aside the gaps in our knowledge and the different regions and eras, there’s too much stuff to fit into a single volume.
The only antique polytheistic religion with something somewhat related to “scriptures” I can think of was the Etruscan religion. I don’t remember the name of these books, and I don’t have a reference handy. Anyway, they haven’t been recovered.
What about the Egyptian Book of the Dead?
Homer was in the ballpark.
The nearest Ancient Rome would have is possibly the Sibylline Books.
Wait, I thought homers were outside the ballpark? Or at least, past the outfield wall.
Dunno what they would have called it. Probably the Latin word for book, whatever that is.
Liber… is ? Dunno which declension applies. But the nominative is Liber.
I’m pretty sure that it’s third, liber, libris.
The Attic Greek for book is Biblos…