You don’t need to enter any Yahoo email settings for automatic setup. All you need to enter is your email address and password and you will be signed in to your account. However, if you are trying to sign in to your Yahoo account from any third-party email application, then you might face trouble with the automatic setup. In that case, you will need to go through a manual setup for which you will need to enter all the Yahoo email settings manually.
https://www.yahoosupport.co/blog/yahoo-email-settings/