what is my @icloud id?

As per the article If you forgot your Apple ID - Apple Support

• Open iCloud for Windows.
• Open iTunes on your PC, choose Account, then select View My Account. If you’re signed in to iTunes with your Apple ID, you'll see your account name and email address.

You can also verify the Apple ID in this link https://iforgot.apple.com/appleid#!&section=appleid

Greetings g_g-h,

Thanks for visiting the Apple Support Communities! It seems you're curious what your iCloud Mail address is.

If you've created an Apple ID that doesn't end in @icloud.com, you'll need to create an account that ends in @icloud.com to use iCloud Mail. Check out the information in the article below:

Create an email address for iCloud Mail - Apple Support

If you don't own an iOS or Mac device, you may have web-only access to iCloud, and unable to access iCloud Mail:

Web-only access to iCloud - Apple Support

Kind regards.