On your iPhone, you can access and manage your Apple ID account settings by following these steps:
Open the Settings app
On your iPhone, find and open the Settings app.
Visit Apple ID settings
At the top of the Settings app, you'll see your name and profile picture. This is where going into your Apple ID account settings. Click on it.
Manage your Apple ID
iCloud settings: Manage your iCloud storage, backups, and other iCloud services.
** with purchase: View and manage your iTunes and App Store settings, including purchase history and subscriptions.
Passwords & Security: Change your password, set up two-factor authentication, or manage other security options.
Payment & Delivery: Update your payment method and shipping address.
equipment: View a list of devices associated with your Apple ID.
Here, you can manage various settings related to your Apple ID, including but not limited to:
Sign out of your Apple ID
At the bottom of the Apple ID settings page, there is an "Sign Out" option through which you can sign out of your Apple ID.
Make sure your Apple ID information is up to date, especially if you change your contact information or payment method.
If you forgot your Apple ID's password, you can use Recover Password to reset it.
If you have more than one Apple ID, you can also sign out of your current account and sign in to another account if you need to switch between accounts.
With these steps, you can easily manage your Apple ID account and the services and settings associated with it.