How do you sign into my account without necessarily having the code from trusted device or phone number because I don't have any other mac device so am stuck at this point .
iMac Pro
You get that message because you have Two Factor Authentication on your account. It is supposed to prevent somebody from signing into an account on a different device unless they can get the code.
Get a verification code and sign in with two-factor authentication. Click here --> https://support.apple.com/HT204974 - "Whenever you sign in with your Apple ID on a new device or browser, you'll confirm your identity with your password plus a six-digit verification code. There are a few ways you can get a verification code. You can use the code displayed on your trusted device, get a text or phone call, or generate a code from your trusted device." Instructions at the end about what to do if you don't have any other trusted devices.
You get that message because you have Two Factor Authentication on your account. It is supposed to prevent somebody from signing into an account on a different device unless they can get the code.
Get a verification code and sign in with two-factor authentication. Click here --> https://support.apple.com/HT204974 - "Whenever you sign in with your Apple ID on a new device or browser, you'll confirm your identity with your password plus a six-digit verification code. There are a few ways you can get a verification code. You can use the code displayed on your trusted device, get a text or phone call, or generate a code from your trusted device." Instructions at the end about what to do if you don't have any other trusted devices.
You had an Apple ID say example1@gmail.com or created with iCloud domain that was previously used in somewhere it could be Mac / iPhone / iPad ( that are not in possession ) .
Now you purchased a new iPhone and trying to sign in with same Apple ID and password and it creates a verification code and the code goes to that Mac , but can't obtained as Mac / iPhone / iPad are not with you .
Click on back as shown in your screen shot .
To avoid using this Apple ID create a new mail account say with gmail services https://support.google.com/mail/answer/56256?hl=en
You have to visit a friends place or apple authorised service centre to use the browser or can create a gmail account from your new iPhone also .
Use this mail address and sign in with iPhone as an Apple ID and create an account with secondary authentication in which three answers for security questions , date of birth , rescue mail address and its password , credit card details ( optional but very much helpful ) .
See the articles Set up your iPhone, iPad, or iPod touch - Apple Support
How to create a new Apple ID - Apple Support
Sign in with your Apple ID - Apple Support
Set up iCloud on your iPhone, iPad, or iPod touch - Apple Support
Set up iCloud Drive - Apple Support
And have to turn on iCloud features Turn iCloud features on or off - Apple Support
In this way you can skip 2FA and get a code , use a new Apple ID set it with secondary authentication .
How do I sign into my icloud from a new device without the your trusted device or phone number and complete sign in. the
