Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
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Hello Kishore Tammineni
I’m sorry you’re unable to receive the verification code, especially when you need to activate Microsoft 365 on your new laptop.
First, make sure your phone is not blocking messages from unknown senders, the message inbox is not full, and the displayed last digits match your registered mobile number. Avoid requesting the code repeatedly, as excessive requests can temporarily prevent additional codes from being sent.
Refer here for more guidance about this issue: Troubleshoot Microsoft verification code issues.
If available, select Use a different verification option and try your recovery email or another method. If no alternative option is available, use the Microsoft account sign-in helper, which will check the account details and direct you to the appropriate recovery option.
Please note that, for account security, support agents and community members cannot manually send a verification code, reset the password, or change the account’s security information.
Feel free reply back to this post and update me on this issue, I'll be happy to help.