If you want to call an Excel macro from VBScript, you need to use the Run method on an Excel object.
In this script I'm assuming your macro is saved in an Excel file called "MyMacroFile.xlsm" and the files you want to process are in a folder called "xlfiles".
Set xl = CreateObject("Excel.Application")
Set fs = CreateObject("Scripting.FileSystemObject")
Set folder = fs.GetFolder(".\xlfiles")
xl.Visible = True
xl.Workbooks.Open "MyMacroFile.xlsm"
For Each file In folder.Files
If Right(file.Name, 5) = ".xlsx" Then
Set wb = xl.Workbooks.Open(file.Name)
xl.Run "'MyMacroFile.xlsm'!ACLDUZELT2"
wb.Save
wb.Close
End If
Next
xl.Quit