Bonus for 30 deliveries?

For the past couple weeks I've been getting a text from Uber, the same number that messages me about promotions and my documents, offering me a $50 bonus for completing 30 or more deliveries in the week. I get these texts on Mondays. Nothing in the app indicates a bonus and I just finished last week with 35 deliveries, still nothing indicating I earned a bonus. Is this just a fake text?