The Reward Shop on Employee Referrals can be activated and deactivated by Admins. If active, you can find it on the left menu bar.
The Reward Shop is the place where employees can purchase rewards from a selection of items provided by the company, based on the amount of coins you have in your wallet.
Talent Scouts can earn coins based on their activities (read here how), which they can then use to redeem the items of their choice in the Reward Shop.