The image you have presented is 90% done in photoshop. whole guitar gradient as a reflection overlay, and then cut in one place. You don’t see reflections like this in real life. It’s added later to look cool.
Although there are some things you can change.
With studio lighting you can see what’s influencing that.
First of all, no need to plug completely black metalness map, that just increases render time.
It seems quite rough, so clearcoat does not help this much. that electric guitar on top is painted flat and then additional layer of clearcoat. Here light is scattering.
Also, look at normal maps (after disconnecting roughness map you can see that that’s the last option that influences reflections). It’s way too strong.
Much better, now we can try roughness.
A bit better, don’t you think?