the below code should open all workbooks in a folder you specify, 1 by 1 and delete the contents of the first 4 rows before saving and closing that workbook.
If instead you want to delete the rows entirely, replace 'clearcontents' with 'delete'.
Please be very sure that you know what this will do and you want to do it before you run code like this, as VBA macros cannot be reversed with such as 'undo'.
Dim directory As String
Dim file As String
Dim wb As Workbook
directory = "" ' place the path here, such as "C:\Users\Maxwolf\ExcelFiles"
file = Dir(directory & "\*.xlsx") ' may need to change to .xlsm or .xls as needed
Do While file <> ""
Set wb = Workbooks.Open(directory & "\" & file)
wb.Sheets(1).Rows("1:4").ClearContents ' this assumes you have 1 sheet per workbook, if not, may want to add a loop here
file = Dir()