Not the Queen, never the queen. She is the "Queen Consort", and her kids don't get titles either:
The consort’s main job is “to provide support and companionship” to the monarch. In the past, consorts have apparently served as a glorified assistant of sorts, hosting events and going to charity galas to represent the monarchy. Camilla is
apparently a patron of over 90 charities, so she has plenty of practice there.
Okay, will she ever be THE queen?
The line of succession follows Philip’s blood descendants, so
Camilla will never become the actual queen, even if he dies before her. His successor is
Prince William, which might complicate Camilla’s title if she does outlive her husband — if William were her biological son, she would probably become the Queen Mother (a role Elizabeth’s mother held for several years), but being a stepmother makes things a little more complicated. She also has two children of her own from her first marriage, Tom and Laura Parker Bowles, who won’t get any royal titles.