Acts 21:9 New English Translation

⁹(He had four unmarried^[a] daughters who prophesied.)^[b]

Acts 21:9 tn Grk “virgin.” While the term παρθένος (parthenos) can refer to a woman who has never had sexual relations, the emphasis in this context seems to be on the fact that Philip’s daughters were not married (L&N 9.39).
Acts 21:9 sn This is best taken as a parenthetical note by the author. Luke again noted women who were gifted in the early church (see Eusebius, Ecclesiastical History 3.31; 3.39).

New English Translation (NET)