I misspelled it. Priscilla. She and her husband founded the church at Ephesus. Acts 18.
The relevant passage: (Acts 18:26) [Apollos] began to speak boldly in the synagogue. When Priscilla and Auila heard him, they invited him to their home and explained to him the way of God more adequately.
IMO, this is far from saying Priscilla “gave sermons”. I could elaborate further, but I’m limited by my iPhone. At any rate, I think an honest reading of that passage paints a picture of a couple inviting a friend to their house to explain how he is in error.
IOW the scene I imagine is one where, over dinner, some friends have a friendly conversation, where two are helping the one perfect his faith. Nothing more dramatic than that; certainly nothing like Priscilla standing up and giving a sermon to a group of people.