External quality factor of an RLC circuit capacitively coupled to a feedline
The simpler answer is for a parallel filter, Q(fo)=R/X(f0) or real to reactive impedance ratio. Simply scale the frequency range to your desired range. Once you get the ballpark values, a calculator will give you better accuracy. However the material dielectric , Er(effective) properties,  must be modelled correctly as a function of f.

This Q is trivial to lookup on a RLC nomograph and the series cap acts as a capacitive voltage transformer similiar to an inductive impedance transformer.

Transmission line properties can be extracted from Saturn's (free) PCB designer.exe tool for the geometry and PCB substrate material chosen and stripline, microstrip or coplanar geometry chosen. Beyond this use COMSOL or EM CAD designer tools. Phase velocity , \$v_{ph} = \dfrac{1}{ \sqrt{LC}}\$