根据列中第一个单元格的值查找列，然后将该列定义为可在宏函数中使用的范围

Function DefineRange(searchValue As Variant, searchRange As Range) As Range
    Dim cell As Range
    For Each cell In searchRange
        If cell.Value = searchValue Then
            Set DefineRange = cell.EntireColumn
            Exit Function
        End If
    Next cell
    Set DefineRange = Nothing
End Function

=DefineRange("要查找的值", 范围)