Hey there, Vijesh K Agarwal
If you do not recognise the security information on your account, please can you go through the sign-in helper tool here: https://go.microsoft.com/fwlink/?linkid=2214157
This will walk you through where you can try and recover your account and information. However, please be aware that if you have two step verification enabled, this may not work.
Hope this helps,
Nathan