There are a few thousand people who still pay for AOL dialup every month.[0] It was around 2 million back in 2015 but AOL has intentionally made it almost impossible to sign up for dialup. They primarily sell a "computer security" service these days and they still offer email addresses.
[0]: https://www.cnbc.com/2021/05/03/aol-1point5-million-people-s...