How to make odometer

I want to make a digital dashboard for my car. the display will be round, now I have a speedometer in the center of the dashboard, a turn indicator and a small LCD display that shows the total mileage, 2 odometers, fuel consumption, average speed.
there are no issues with the speedometer and turn indicator. but how do I configure realdash to show total mileage, odometer, and fuel consumption?

What type and name your car?

Car kia Sorento 2011

I check wiring diagram your instrument cluster

All inputs as you need you can found in CAN

Need harware for analys CAN frame

Need any CANBUS convertor for app Realdash

And write xml and draw skin

https://www.ksmanual.com/instrument_cluster_circuit_diagram-1178.html

I can decode the can bus data to extract the speed. the question is how to use realdash to make an odometer and total mileage