There are a few different ways to find the settings icon in Yahoo Mail on your iPad.
One way is to look in the top left-hand corner of the screen, where you will see a gear icon. This is the settings icon and tapping on it will take you to the settings menu.
Another way to find the settings icon is to scroll down to the bottom of your inbox and look for the link that says “Settings.” Tapping on this will also take you to the settings menu. Once you’re in the settings menu, you can change a variety of options such as your password, signature, language, and more. You can also manage your accounts and add new accounts if you have more than one email address.
If you’re still having trouble finding the settings icon, you can always contact Yahoo Mail support for assistance.