Ww.yahoo.com mail
You're looking for the Yahoo Mail website!
The URL for Yahoo Mail is actually mail.yahoo.com, not ww.yahoo.com. Here's the correct link:
You can access your Yahoo Mail account by logging in with your username and password. If you don't have a Yahoo Mail account, you can sign up for one by clicking on the "Create account" button on the login page.
Let me know if you have any other questions or if there's anything else I can help you with!