How I write group by Query ?

ALTER PROCEDURE [dbo].[searchJobs] 
--[dbo].[GetImagesPageWise] 2, 10, null
	@PageIndex INT = 1
   ,@PageSize INT = 3
   ,@RecordCount int OUTPUT
  
   ,@keyword nvarchar
   
AS
BEGIN	
	SET NOCOUNT ON;

    SELECT ROW_NUMBER() OVER (ORDER BY Job_id DESC) AS RowNumber
      ,Job_id ,substring(PostJobs.Exp_JobDescription,1,200)+ '...' AS ShortJobDescription
      ,Job_Title ,Job_NoOfPosition ,Ad_Image ,Exp_JobDescription
      ,Job_ApplyBefore ,PostDate ,Job_SallaryFrom, Job_SallaryTo
      ,Job_SallaryType ,Jobs_PostType ,Exp_DegreeTitle ,Exp_CarrerLevel
       ,Company_Logo ,Country_Name ,Company_Registeration.Company_Verified
    INTO #Results
    FROM PostJobs,Company_Registeration, Country
    where PostJobs.Company_id=Company_Registeration.Company_id
    and (((PostJobs.Job_Title like '%'+IsNull(@keyword,PostJobs.Job_Title)+'%')))
    
    SELECT @RecordCount = COUNT(*) FROM #Results
           
    SELECT * FROM #Results
    WHERE RowNumber BETWEEN(@PageIndex -1) * @PageSize + 1 AND(((@PageIndex -1) * @PageSize + 1) + @PageSize) - 1
     
    DROP TABLE #Results
END