SmartScripter is an AI-driven web application designed for script generation in multiple programming languages

Sure, here is the Excel VBA Script to count all the cells in column A:

Sub CountCellsInColumnA()
    Dim lastRow As Long
    lastRow = Cells(Rows.Count, "A").End(xlUp).Row
    MsgBox "Total number of cells in column A: " & lastRow
End Sub

This script first finds the last row with data in column A using the .End(xlUp) method, which returns the cell at the bottom of the column. It then counts the number of rows from the top to the bottom and displays the result in a message box.

To run this script, simply open your Excel workbook, go to the Developer tab (if it's not visible, you can enable it in Excel Options), click on the Visual Basic button, and then paste the code into a new module. You can then run the macro by pressing F5 or clicking on the "Run" button in the VBA editor.