Gotcha, no worries. I'm working in C++ and my current approach is the following: (maybe you can advise if I'm on the right track)
LiftForce = (0.5 * AirDensity * FMath::Square(MainRotorAngularVelocity) * (MainRotorBladeLength * MainRotorBladeWidth) * CL);
Angular velocity is derived from converting RPM to rad/s. Rotor length and width is in cms. CL is a linear function for now based on blade pitch angle.
I'm aware that this wouldn't replicate many behaviors like translational lift, dissymmetry of lift, transversal flow etc. I've been reading through manuals and booklets and looked through a lot of source code on GitHub that attempts to do the same.
Unfortunately most of my attempts don't yield anything that feels remotely to what you've shown in your video.