Parents passed .. have a Will and debt I'm the heir and in charge of will . What do I do?

I'm sorry to hear of your loss.  This always starts with taking an inventory of the assets to determine if you need to offer the will for probate or not.  This forum isn't appropriate to give you step by step instructions.  You are best served by retaining local counsel to help you with that analysis and probate process, if necessary.  A couple of important deadlines regarding inheritance tax:  the inheritance tax return and tax is due to be paid in 9 months from date of death.  if you make a payment w/in 3 months of death, you get a 5% discount.  So no time to delay.