its not a scratch, the gold plated foil has lifted from the pcb and folded up, so there is nothing conductive to make contact with the slot.
If the card is new, RMA it, if you bought it 2nd hand from a legit site, return it.
If neither of the above are options, you are going to have to try and repair it.
I would also check the slot, to make sure there isnt some debris in there that caused the damage.
How are your soldering skills??
Either solder a very thin piece of flat copper onto the remaining track, or try using some conductive silver/gold paint to replace the damaged section.
Conductive silver paint can be hand from some car repair sites (used for heated window element repairs); conductive gold paint from a hifi specialist...