Thats not good at all - I would say a good 8/10 bad

Rings look seized in the piston - and scoring is pretty bad.

As Norm advised, I would first pull the head, pull cylinder barrel (check), rip piston off, soak in penetrating oil to help remove the rings then very gingerly remove them. Clean up piston and ring grooves, check ring gap in bore

Seeing that through the port, I would personally hone the bore and put a set of rings in minimum (possibly piston as well) but the problem is you are a long way from the parts bin