As I said above, the Q meter does a nice job over a wide range of frequency and inductance. It works by measuring the resonant rise of a simple circuit.
The VNA has a different method, equally valid. Using a bridge is misleading because of the many variables involved, especially operator skill. My GR bridges indicate Q but only for rather low frequencies. The Q meter takes it from there up to a few hundred MHz. The VNA indicates R + jX or, in the case of the nanoVNA, R and L. This, over a very wide frequency range from 50 kHz.
The important thing is to compare apples with apples. Standardize on a method and stick with it. Comparison with other methods can be interesting. The lower the Q, the less important is the frequency. If the Q is low enough, it becomes a resistor. A perfect resistor has a Q of zero; a perfect inductor has infinite Q.
You can use a generator and oscilloscope but the 'scope input impedance becomes important for high Q.
There is, as noted above, a wealth of material available on the subject. One could start with Terman's Radio Engineering. The old highly competent and respected companies that made inductors are pretty much gone. They were spearheaded/masterminded by some of the most important people, and their work will never become obsolete.