Sub Macro1()
Dim O As Worksheet
Dim Col_Status As Range
Set O = Worksheets("Feuil1")
Set Col_Status = O.Range("K2:K501")
For n = 0 To 10
If Col_Status.Cells(n + 1, 1) = "EnCours" Then
Debug.Print Application.WorksheetFunction.CountIf(Col_Status.Range(O.Cells(1, 1), O.Cells(1 + n, 1)), "EnCours")
End If
Next n
End Sub