I use VNC to access my Pi in headless mode from either a PC, an Android phone, or mostly through a Kindle Fire tablet. The IP address is either the same as my router if at home and all on the network, or 10.10.10.10 if the Pi is out of range of WiFi and is working as a hotspot. The name and password are what I set up on the Pi using the BAP tools for hotspot management. I don't recognize the VNC screen you are showing, but it has been a while since I set VNC up and once done it seems to replicate across other platforms when I sign in. Try entering the IP address and the Pi user and password and see if the port assignment is even needed.

=Vic=