You can easily redeem your points for cash back in the Point App.
Make sure that you're logged into your Point Account and you can cash out your Points as balance by going to the Activity tab and swiping left. From there, you should be able to hit the "Redeem for Cash" button and select the amount of points you'd like to cash out.
Please note that there is a minimum of 100 points required before you're able to cash your points out.