1995 jeep will not start

A vehicle needs three things to run. Air, Fuel and spark. You didnt say if it turns over or not. If it doesnt turn over you could have a dead or bad battery which would be fixed by replacing the battery or testing the charging system. If it turns over but no start check for spark and fuel pressure and that you are getting air into the intake. If the battery is charged and it does nothing check the starter.