Just one wheel bearing? There are 2 bearings making a total of 4 pieces per wheel.

Spin the wheel, listen for noise.

Look at the back of dust shield, maybe pull it back a bit, spin wheel, any change? If not:

Pry the brake pads back a bit listen for noise

Pull the pads out . .

Remove the caliper. . .

Remove the rotor and look for scrape marks.

If the dust shield is rubbing it will make lots of noise.

Some rubbing is normal if you are close up, but if you can hear it while driving, something is wrong.