New questions from the duplicate thread you started today:

"Will I face criminal charges ?"

No way for us to predict this intelligently.


"If the cops were already there wouldn’t they have already arrested me?"

Unlikely that a custodial arrest would be made for a shoplifting charge.


"Also I just received a letter in the mail stating: 'This is a demand that you pay $206.95 in satisfaction of this civil claim. This is not an attempt to settle a debt...You have a right contest your liability in court.' Do I have to pay this"

No.


"what will happen if I don’t?"

You might get sued in small claims court.


"I am 18 but my parents don’t know this happened and I don’t want them to find another letter like this in the mail. Should I just pay it?"

That's not for anyone here to say.


"How many of these letters should I expect?"

Only someone familiar with the loss prevention policies and practices of your victim will be able to provide a reliable answer to this question.