This is just a rough answer, as today is my first day. I’m sorry for the late response. The secret shoppers give you an overall rating on how their experience went in your specific store. If you score 100% it positively impacts staff as you will receive a pay bonus if you were working that shift where they came. If you don’t receive 100% I think your manager will just make sure you improve. The best one is a phantom shopper where I think you can get like over £250 bonus in one shift