Reading RPM Data using Sapog-based ESC

I’m now using Sapog-based ESC (Holybro Kotleta 20) and want to get RPM data through QGroundControl in real time.

Can you tell me how can i do that? or is it possible or available?

You need to subscribe to as described in the reference manual:

How you can actually implement that depends on the flight stack you are using.