Count Item Quantity and Critical Stock on the dashboard

Question

Hello Team I want to count item quantity and critical stock from my mvc controller and pass to dashboard, kindly assist. 

public JsonResult GetDashboardData()
        {
            ASPNETMASTERPOSTEntities db = new ASPNETMASTERPOSTEntities();
            var currentDate = DateTime.Now.Date.ToString("dd-MMM-yyyy");
        
            return Json(JsonRequestBehavior.AllowGet);
        }