You can try the following, which iterates over all sheets in your book and only "acts" for sheets with index 3 or higher.
Dim sheet As Worksheet
For Each sheet In ActiveWorkbook.Worksheets
If sheet.Index > 2 Then
' Do your thing with each "sheet" object, e.g.:
sheet.Cells(1, 1).Value = "hi"
End If
Next
, , (10 - ), .
, "Sheet" + i ( i - 3- ), :
Dim sheet As Worksheet
Dim i As Long
For i = 3 To ActiveWorkbook.Worksheets.Count
Set sheet = ActiveWorkbook.Worksheets(i)
If sheet.Name = "Sheet" & i Then
' Do your thing with each "sheet" object, e.g.:
sheet.Cells(2, 2).Value = "hi"
End If
Next i
, , , . , , , .