Hi @rb_20,
there is a forum member who tried to use this sensor also:
https://forum.arduino.cc/t/interfacing-no2-sensor-with-arduino-mega-2560/1185742
You could try to get in touch and see if there is any progress ...
The supplier does not seem to support Arduino:
https://forum.mikroe.com/viewtopic.php?t=75961
but provides a library for a different development environment that may help to write an Arduino library:
https://libstock.mikroe.com/projects/view/2954/no2-2-click
That's unfortunately all I can contribute at the moment.
Good luck!