hi mnur. maybe this in E2:
=SUMPRODUCT(--(TEXT(ROW(INDIRECT($B$2&":"&$B$3)),"dddd")=D2))
if you exclude the holidays, it would be:
=SUMPRODUCT(--(TEXT(ROW(INDIRECT($B$2&":"&$B$3)),"dddd")=D2),--(COUNTIF($B$5:$B$6,ROW(INDIRECT($B$2&":"&$B$3)))=0))