"The first name is not bad."
Translation:Der Vorname ist nicht schlecht.
I could be wrong about this, but using erste Name would be used to signify a specific name, like a name in a list. Example: people are looking at a list of child names and someone states that the first name on the list is not bad. Vorname is the term used to signify the actual first name of a person. Maybe erste Name would make sense in context to a German person, but I'm sure technically they are two different terms and would seem that only Vorname would be used when asking the first name of a person.