"It has been said" brings among other meanings the one of rumor. "It has been rumored"

Is said or has been said?

"It's been said" implies something that came up at some point in time, that may have been mentioned by one person or a few people. The subject would come from the speaker's own circle. "It is said" is more general, a convention or an opinion shared by a larger group.

How do you use it has been said in a sentence?

Sentence examples for it has been said that from inspiring English sources. It has been said that Pres. Consequently, it has been said that humans are basically female. "It has been said that the inquiry is in crisis.