Over the years I've received the occasional password reset from a service I've never used (or even heard of sometimes). As far as I can tell, the emails are genuinely being generated and sent by the service. Still, I always ignore them.
But, more recently, this has been ramping up, to the point where I recevied dozens of password reset emails from Apple within a few hours. I do have and have never had an account with any of Apple's services.
So, why am I getting these? Is this some kind of attack? What is the aim/goal of this? Is there anything I can do about this, or should I just continue to ignore all of it?