My pap smear said normal, but what does this mean "endocervical component/squamous metaplastic cells from transformation zone are present."?

Good: That means that the pap smear tested the area between the ecto- and endo-cervix, the "transformation zone". This is the zone where abnormal cells tend to arise, so the fact that this pap smear captured cells from that area is perfect, that's just the area that doctor was hoping to analyze. Metaplastic cells are not cancer, and are benign, so this is a benign result. HOpe that helps!