I am trying to delete a row if cells in column V is not equal to F or V.
This code deletes everything.
For i = RowCo
Your logic seems incorrect. By changing the or to an and, you will then be evaluating the proper boolean arithmetic.
or
and
Right now, you are checking not "v" and not "f" which is always false. No matter the input, this will always have answer be true.
not "v"
not "f"