If you have an issue that is related to account access or other login problems like:-
you may have foregotten your username or password then Then Blogger's account recovery tool provides you an option to recover your account .
There are basically two ways to recover your Blogger Account:-
a)By Blog URL
2.)You have to type the Blog's url & click the Lookup button.
3.)A email will be sent to you about the Login Process
This method is used when you have more than one blog.
b)By email address
2)You have two type your email id and click lookup button.
3)Then you can recover your account by either Phone verification or by Secondary email.