I uploaded my Unity app to the google play store and integrated in-app purchases. Is it possible for the money I receive from these purchases to be paid to my PayPal account. If so how would I go about doing this.
No, not that I see, in the US at least I see only bank accounts as allowed and those may be business, checking, or savings. However, Google support, who know much more about this than anybody in the Unity forums would, usually answer support questions within 3 days of receipt.