Display stored procedure value

ALTER PROCEDURE [dbo].[usp_SalesOrderForUnit_Select]
      @UnitID BigInt
AS 
BEGIN 
    SELECT DISTINCT
            so.Number as SalesOrder
         ,sog.Number as SalesOrderGroup
         ,so.NumberPurchaseOrder as PurchaseOrder
      FROM
      --    UnitSetup.UnitDetail AS ud
      --INNER JOIN ProductionControl.ContainerContent cc
      --    ON ud.UnitHeaderId = cc.UnitHeaderId
      --    AND cc.DateEffectiveOut = '99991231 23:59:59.999'
     --INNER JOIN UnitSetup.SalesOrderGroupVersion AS sogv
      --    ON sogv.SalesOrderGroupVersionId = cc.SalesOrderGroupVersionId
      --INNER JOIN UnitSetup.SalesOrderGroup AS sog
      --    ON sog.SalesOrderGroupId = sogv.SalesOrderGroupId
      --INNER JOIN UnitSetup.SalesOrder AS so
      --    ON so.SalesOrderId = sog.SalesOrderId
      
            UnitSetup.UnitIdentity AS ui
      INNER JOIN UnitSetup.SalesOrder     AS so
            ON ui.SalesOrderId=so.SalesOrderId
            AND ui.DateEffectiveOut=CAST('99991231 23:59:59.999' AS DATETIME2(3))
      INNER JOIN UnitSetup.SalesOrderGroupVersion AS sogv
            ON sogv.SalesOrderGroupVersionId=ui.SalesOrderGroupVersionId
      INNER JOIN UnitSetup.SalesOrderGroup AS sog     
            ON sog.SalesOrderGroupId=sogv.SalesOrderGroupId
            AND sog.SalesOrderId=so.SalesOrderId

      WHERE
            ui.UnitHeaderId = @UnitID
      
END