Hello Kitkat2323,
We'd like to provide you with some direction. First, we suggest that you follow these steps to secure your account: If you think your Apple ID has been compromised
Next, the following information will assist you with accessing iCloud email, on your device:
"After you create a primary iCloud Mail address, you can use iCloud Mail on iCloud.com and on your iPhone, iPad, iPod touch, Mac, and Windows computer. For an overview of what you can do with iCloud, see Send and receive iCloud Mail on all your devices and keep Mail settings up to date. If you have an iCloud+ subscription, you can also set up a custom email domain to personalize iCloud Mail.
Note: Make sure you’re signed in with the same Apple ID on each device. If you have devices where you’re not signed in with your Apple ID or that have iCloud Mail turned off, you won’t be able to send or receive email from your iCloud Mail address on those devices. If you have devices that have iCloud Drive turned off, your Mail settings won’t stay up to date on those devices.
Set up iCloud Mail on your iPhone, iPad, or iPod touch
- On your iPhone, iPad, or iPod touch, go to Settings > [your name] > iCloud.
- If you want to send and receive iCloud Mail on your device, do one of the following:
- iOS 16, iPadOS 16, or later: Tap Mail, then turn on Use on this [device].
- iOS 15, iPadOS 15, or earlier: Turn on iCloud Mail (or Mail).
3. If you want to keep Mail settings up to date across your devices, turn on iCloud Drive. The following settings stay up to date:
- The order of your mailboxes (for all iOS and iPadOS devices)
- Email address suggestions (for all iOS, iPadOS, and macOS devices)
- VIPs (for all iOS, iPadOS, and macOS devices)
4. To view your iCloud Mail, open the Mail app. Tap a mailbox or folder in the iCloud section.
For more information on how to use Mail on your iPhone, iPad, or iPod touch, see any of the following:
You can find more details here: Set up iCloud Mail on all your devices
Thanks for connecting with Apple Support Communities.
All the best.