sry, i make a mistake.

your formula @CARACALLA work fine

SUM(IF(FREQUENCY(IF(Sheet1!B2:B100=Sheet2!B2,IF(Sheet1!A2:A100=Sheet2!A2,IF(INDEX(Sheet1!D2:O100,0, MATCH(Sheet2!C1,Sheet1!D1:O1,0))<>0,MATCH(Sheet1!C2:C100,Sheet1!C2:C100,0)))),ROW(Sheet1!C2:C100)-ROW(Sheet1!C2)+1),1))

thx for your help