I have Mac OS Sierra. Unfortunately, I cannot upload my app due to a bug in Xcode 7.3.1 that makes it impossible to upload to iTunes Connect from Mac OS Sierra.
I have found a work around: Can I upload Xcode builds on macOS 10.12
However, it says I need to find my app's "archive" file. I believe that is the same thing as my app's .ipa file.
Where would my app's .ipa file be located?