I separated 2 sub functions (NextStep and AnotherStep) because the SendKeys code will run after the code is done. After I created ImportWorkbooks function, the SendKeys code are now inside a loop, and it will run again after the loop is done.
I used SendKeys because I cannot get the data from the filtered cell. I did my research and somehow SendKeys is the only code that works.
Public Sub ImportWorkbooks()
  Dim FNames As Variant
  Dim Cnt As Long
  Dim Wbk As Workbook
  Dim MstWbk As Workbook
  Dim Ws As Worksheet
  Dim I As Integer
   
   Application.ScreenUpdating = False
   Set MstWbk = ThisWorkbook
   FNames = Application.GetOpenFilename(FileFilter:="Excel files (*.xls*), *.xls*", MultiSelect:=True)
   If Not IsArray(FNames) Then Exit Sub
   For Cnt = 1 To UBound(FNames)
      Set Wbk = Workbooks.Open(FNames(Cnt))
      Wbk.Sheets("Summary").Activate
      Wbk.Sheets("Summary").Copy Before:=MstWbk.Sheets(1)
      MstWbk.Activate
      Application.DisplayAlerts = False
      MstWbk.Sheets("Summary").Activate
      NextStep
      Application.DisplayAlerts = True
      Wbk.Close False
   Next Cnt
   'Application.ScreenUpdating = True
End Sub
Private Sub NextStep()
   'set column AV
   Range("AV1").Select
   ActiveCell.FormulaR1C1 = _"=IFERROR(CONCAT(RC[-9],""_"",ConcatenateButBlank(RC[-3]:RC[-1])),RC[-9])"
   Application.CutCopyMode = False
   Selection.Copy
   Range("AV2").Select
   ActiveCell.FormulaR1C1 = "=AGGREGATE(3,3,C[-47]) - 2"
   Range("AV3").Select
   ActiveCell.FormulaR1C1 = "Status & Date"
   Dim Counter As Integer
   Dim Total As Integer
   Dim I As Integer
   Dim RowID As Integer
   
   For Counter = 1 To I
    SendKeys "+({DOWN})"
   Next Counter
   SendKeys "^(v)"
   AnotherStep
End Sub
Private Sub AnotherStep()
   // VBA code...
End Sub
