My Nikon is buzzing

I’m using Nikon B500, today I noticed that lens is making strange noise, i’m sure that it was completely silent before, its kinda buzzing sound while it is on and it gets even worse when i’m zooming in, also switching between preview and shooting mode makes clicky sounds. Is this common thing? What could that be ? What are prices for B500 lens repair ? Should it be completely quiet while it works or no, even when VR is turned off ? Thanks