In this submenu you should see your phone samsung SM-G980F or phone's ip, click on it to connect.
If not found your phone name in this submenu, You can see it is ip in the list, if not -> add new ip & write your phone ip.
In the mean time your b4a bridge should be ready for connection.
And the best choice is connect your phone to IDE computer using usb cable, then in IDE log tab click connect.