What do i do to access my outlook account in my ios 15

Hi nisham49,

Thank you for using the Apple Support Communities! If you are unable to access mail, the guidance from the article below may help:

If you can't receive email on your iPhone, iPad, or iPod touch

Check your email address and password

If the Mail apps asks you to enter a password for your email account, make sure that your password is correct. To check your email address and password, sign in to your email provider's website.

If you still get a username or password error, contact the email provider or system administrator.

1. Contact your email provider or check their status webpage to see if there's a service outage. 

2. Ask your email provider or system administrator if you turned on any security features or restrictions, like two-step verification, for your email account. You might need a special password or may need to request authorization from your email provider to send and receive email on your device.

3. Check your email account settings with your email provider or system administrator to make sure that they're correct.

Hope this helps!

Have a great day.

Why not? Outlook is a Microsoft product/service.