Look for the cluster of four buttons to the left of your steering wheel. The one that looks like a window (or a “square”) toggles through the displays.
Pressing the button with the dot (the period?) can reset kWh efficiency so you can get a good of idea of your m/kWh.
You can see an illustration in the owner’s manual:
https://owners.nissanusa.com/nowners/navigation/manualsGuide
I routinely get around 80+ miles on one charge in cold weather (low 30s, high 70s). Longest distance has been 103 miles. I reset the Trip B ODO to 0, reset efficiency and reset efficiency history to see what might result. For that trip, I ended with with two bars left (18% on Guess-O-Meter?) and 4.5 average m/kWh but saw as high as 5.1 m/kWh. So possibly could have gone another 18 miles terrain, speed, temperature, driving style dependent?