$100 roblox card

This is a $100 Roblox gift card that I accidentally bought I don’t even know what Roblox is but I’m just trying to thought to be able to feed my kids until my next paycheck I really need this gone as quickly as possible I have not used it I have the receipt and I have the transaction on the credit card that I used I would return it to the store but they don’t allow these to be returned so I’m tryi...