Hi nancy.
What do you want to fix?
Norton Mobile Security (NMS) or Norton Security antivirus as it is currently called in Google Play is what you should have on an Android phone. N360 does not run on Android. You can buy N360 Multi Device which gives you licenses for both N360 on traditional Windows machines and for NMS on Androids. But if you only have the one device (i.e. the Android phone) then all you need is NMS.
If you have bought two products and only need one then you should be able to make use of the Norton refund policy, details of which can be found here.
I hope that helps. If you need any further help, just ask.