How many times does PR come into Cinderella rockerfella?

It is impossible to answer how many times "PR" comes into "Cinderella Rockerfella" without more context.

Please clarify:

* What is "Cinderella Rockerfella"? Is it a song, a book, a movie, a person's name, or something else entirely?

* What do you mean by "PR"? Do you mean the abbreviation for "public relations," or is it a specific word or phrase within the context of "Cinderella Rockerfella"?

Once you provide this information, I can help you find the answer.