I recieved court supervision for fighting and agreed to a deal which was 40 hours community service and court supervision 1 year

You have two issues. The first is the new charge and the second is the impact the arrest on the new charge will have on the original disposition. Consult immediately with an experienced IL defense lawyer before you go to Court and before you make any decisions about how to resolve these issues. The lawyer can advise you of the possible dispositions, how to minimize your potential exposure, and advise you on any legal issues that can impact the State's case. Good luck.

DISCLAIMER I do not practice law in your State. This answer is provided solely for informational purposes only. This answer does not constitute legal advice, create an attorney-client relationship, or constitute attorney advertising.