had a wheel bearing going out so I replaced it....

now I am getting a "scratching" noise from the front?
Also now in the rear I am hearing a "hummmming" sound could it be noisey tires? maybe I can post a video
I don't think the rear is a wheel bearing

 

Did you use OEM bearings?

 

Could be shitty aftermarket wheel bearings. Spend the extra money its worth it

 

For the rear humming noise,rotate the tires to see if the noise moves to the front,happened to me i changed the wheel bearing only to find out it was a bad tire, for the scratching noise make sure the backing plate is not rubbing against the rotor.