Code:
SELECT DISTINCTROW data_tbl.Service_Type, data_tbl.Service_Item, Format$([data_tbl].[Billing_Month],'mmmm yyyy') AS [Billing_Month By Month], Sum(data_tbl.Service_Count) AS SumOfService_Count
FROM data_tbl INNER JOIN Scorecard_cost_per_mgd_server_max_month ON data_tbl.Billing_Month = Scorecard_cost_per_mgd_server_max_month.MaxOfBilling_Month
GROUP BY data_tbl.Service_Type, data_tbl.Service_Item, Format$([data_tbl].[Billing_Month],'mmmm yyyy'), Year([data_tbl].[Billing_Month])*12+DatePart('m',[data_tbl].[Billing_Month])-1
HAVING (((data_tbl.Service_Item)="Critical" Or (data_tbl.Service_Item)="High" Or (data_tbl.Service_Item)="Medium" Or (data_tbl.Service_Item)="Low"));