Vocal/Piano/Guitar "Song Books" usually give you 'piano bass'(what a piano player might play with his Left Hand); sometimes, what's transcribed is close enough for what you can play on a bass...most of the time, not.
Check out
The Beatles Complete Scores...though there are some typos & maybe a few errors, it's worth having, IMO.
There are a couple of Transcribed Scores Bass Books for Beatles' tunes...IIRC, there was a "Red" one & a "Green" one.
Check out
www.bassbooks.com &/or
www.halleonard.com