From the web:
After you log in to your account, click the circle in the top right corner of the page. A drop-down menu will appear where you will see Account Settings
Here you will see the following tabs: My account, Community profile, Preference, Payment, Connect, Devices, Communication and Support.
From the iOS app:
Go to the Library tab and then click the little gear icon in the top right corner. The iOS app does not offer as many options as the Account Settings on the website.
Here you will see Profile, Preferences, Notifications, Offline Video Quality, Connect to Apple Health, Connect to Strava, Our Manifesto, Contact Us, Support, Legal, Restore Purchase, Logout.
*You cannot cancel your account from the iOS app in Account Settings. Refer to the following article for cancellation instructions: How do I cancel my account?