She is the highest paid female entertainer in the world. She has the most top ten hits of any woman in history. She is the first female artist to win the Grammy for Album of the Year three times, the first living female artist to hold three top ten albums simultaneously, and the first one ever to hold the top ten songs on Billboard’s Hot 100 at the same time. She has legions of fans, including (apparently) more than half the U.S. adult population. She is the most streamed female artist on Spotify.
You could reasonably conclude she has some degree of influence, particularly on the generations that will be running this country in the coming decades. And she is not shy about speaking out on issues that matter to her, including this country’s current treatment of the LGBTQ community.