RevPi Core has its own web server. Via HTTPS you can access the webstatus of the RevPi Core with any browser via the IP of your RevPi Core. The login username is “admin” and the password is printed on a label on the side of your RevPi Core (it is unique for each device).
If you want to change your password, please take a look at this tutorial.
For further information about RevPi web status, please take a look at the web status tutorial.