I've seen no evidence that this is currently true, though I have now heard there is a claim that she was in the past. What no one disputes is that she broke the rules of at a musical of Beetlejuice, but that's it. I don't agree with Boebert on various issues, from abortion to her notion that alligators should be deployed at the border, but I draw the line at making up accusations about her.
As to the evidence I've found that she may have been an escort in the past, along with the idea that she's had some abortions herself, the claim comes from an anonymous source that sent information to fireboebert.com:
Lauren Boebert Was a Paid Escort and Had Two Abortions | fireboebert.com
As to the abortions, those like myself who are pro choice basically say things like this:
Lauren Boebert denies report that she had 2 abortions—but her biggest critics are defending her right to choose | dailydot.com
Boebert has apparently denied all of these allegations, but politicians tend to deny allegations that would be hard to prove, so I think it's possible they're all true.
Broke the rules at Beetlejuice? Do you think that is fair representation of what she did? You are an apologist for her.