(Maria Bartiromo) Yes, of course. She has been interviewed (by Just the News, e.g.) but her attorney had much control over it. She's in a bit of a box while her contract is in effect. If anyone wanted to hire her during that time they would have to buy her contract.
It is amazing how many people have speculated that Bartiromo could become the White House Press Secretary. Probably not as long as Fox holds her contract. Her contract expires at the end of the Trump presidency.
I doubt it, for a number of reasons. For one thing, she's almost sixty and WH Press Sec would be a step down career wise. Frankly, I don't think she could handle it.