Do I have to repay medical debt?

So I was on my parent’s insurance until I hit 19 (21 now) but continued going to the therapist unaware that I did not have insurance. I have been avoiding my medical debt since I got my first text message about it. Last number I saw was over a thousand dollars. I make roughly 35k a year but I am already so swamped with bills and paying off my car and credit card.

I mean genuinely ya boy is struggling hard.

I recently got a text from a debt collection agency saying that I have an account with them now and I am unsure on what to do. Can I mentally sweep this under the rug or do I need to enroll in a payment plan? I’m unsure of the laws about this in Arizona and honestly I have no idea what I’m doing when it comes to this.

If I dont do anything about this could I be in legal trouble???