Quartz countertops are theoretically not supposed to scratch as easily as granite or marble. Try cleaning the countertop. If it does not come off after being cleaned than I would contact your granite/quartz fabricator.

Thank you. I have tried scrubbing the tops but it did nothing. It appears that the black color on top has been removed revealing the white underneath

I would call your fabricator, some quartz stones have a warranty

There shouldn't be any "white underneath," as a quartz surface should be the same material all the way through. You might have a coating that has been scratched, but we can't possibly know. Only your fabricator.

Thank you for your responses. I will contact the contractor who installed the countertops. One more question. I am neive when it comes to countertops, contractors and how to deal with this situation. Could the contractor have put in a product other than Quartz? One that looks like Quartz? When they drilled the holes for the faucet the coloring in the hole was white not black

What's the name of your stone? Some stones are sold as quartz when in fact they are something else. Natural products such as quartzite are not as hard as the man made quartz. There have been several people who thought they purchased man made quartz only to find out the stone they chose was a natural product.