Perhaps you could use the activity Copy/Paste Range to copy the formatted table, and then use the Autofit Range activity to fit the column (and row) widths.
If you know the excact range that is being copied, you could define it as Excel.Sheet(“Sheet2”).Range(“D1:XX”) within the Autofit Range activity, to only autofit that specific part.
You have to use two Use excel files activity. In first Use excel file activity give the path of the Excel A and change reference as ExcelA. Inside of it Insert second Use excel file activity and give the path of the Excel B and change the reference as ExcelB. Inside Second Use excel file activity insert the Copy/Paste range activity, give ExcelA range in Source and ExcelB range in Destination.