PERM Advice

My boss filed the 9089 PERM application on 23/1/17 and the status was "submitted" until 3/4/17 when it changed to "in process". How long am I looking at until I get either accepted/denied/audited?

He has given me my alien reference but says he doesn't have a receipt number as he never got an I-797 only a confirmation email as follows

Case Number: A-16306-67022 Received: 01/23/2017

This is a confirmation email that the U.S. Department of Labor has received your response to the questionnaire regarding sponsorship of ******** for the full time position of LOGISTICS COORDINATOR. Your case will now continue to be processed.