Where does the link "Please Contact Us Immediately" take you?
Did you Sign on to your Account from a New Device (you are showing a screen shot of a phone)?
If that link leads you to a website that is Adobe.Com then it is legitimate. If you signed on from a new device, not new to you but one you never signed onto your Adobe account from, then they are asking you to confirm it is YOU that has signed on. They sent that email to the email address you have associated with your Adobe ID.