How can I convert reed sensor impulses to cubic meters and kWh for my gasmeter?

I have a vzlogger instance running that posts my gas meters impulses to HA. I am somehow lost now how to convert these impulses to m3 and kwh and how to use the values also as utility meter for the energy dashboard.

pi@rpi-vzlogger:~ $ cat /var/log/vzlogger.log | grep chn2
[Apr 28 07:29:56][chn2] New channel initialized (uuid=...f68014 api=volkszaehler id=Impulse)
[Apr 28 07:30:07][chn2] Adding reading to queue (value=1.00 ts=1651123807015)
[Apr 28 07:31:51][chn2] Adding reading to queue (value=1.00 ts=1651123911626)
[Apr 28 07:32:51][chn2] New channel initialized (uuid=...f68014 api=volkszaehler id=Impulse)
[Apr 28 07:33:01][chn2] Adding reading to queue (value=1.00 ts=1651123981001)
[Apr 28 07:34:12][chn2] Adding reading to queue (value=1.00 ts=1651124052494)
[Apr 28 07:35:24][chn2] Adding reading to queue (value=1.00 ts=1651124123924)

mqtt.yaml:

- platform: mqtt
  name: "Gas Meter"
  state_topic: "vzlogger/data/chn2/raw"

Thanks for helping

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