To get 15 dollars on the cash app then you will require downloading the app on your device and creating a new account using your name and date of birth. Further, you have to enter a referral code QPBMKWC to process $15. Later to these, you will need to send $5 to other people within 14 days of your account creation. Thereafter, you would be eligible to gain the $15 on your cash app.