Hello @Santosh Dahal I would advise to please try with a different phone number and it should work otherwise you can contact Microsoft 365 support to investigate it further.
How to solve this problem: The phone number didn't pass security checks?"
I recently tried to join the Microsoft 365 Developer Program. When I attempted to verify my phone number, it displayed the following message:
We can't continue with the signup process for the following reason: Your phone number did not pass security checks. MS-CorrelationId: 00000000-dcd0-4c39-9278-c4200a6f6a38 Code: 40301