smtp.aol.com is the host name of your outgoing server.
Outgoing server port number:- 465 for SSL and 587 for TLS
Requires SSL/TLS Encryption.
Authentication is required.
Read more here:- https://www.datarecovo.com/how-to-add-aol-email-to-iphone/
See Also this post:- https://datarecovo.puzl.com/_news/How-to-Configure-AOL-Email-On-iPhone%253F/301413
Here are the steps for AOL Mail Login
From any browser, go to login.aol.com.
From there, navigate to the top-right corner.
Tap on the Join/ login option.
On the login page, enter your username and tap "Next."
Then, enter your password and click "Next" again.