"Upload", I'm not a robot, but I can't verify it by myself.
Hi! I have uploaded some games to Apple Store, and I know how to upload it being compiled from Unity3D to XCode, it's easy and there are some tricks that if you want I can let you know.
I wrote 6 days as deadline, because Apple Store takes some time to approve or disapprove the upload, and you may want some help if they refuse your app in the first time.
The things I will need from your Apple Developer Member Center, is an access as "Admin" because I have to create some certificates and profiles, as for myself and for the consumers, also I need to have access to your iTunes Connect as a "Developer" to upload the builds. If you don't wanna give Admin access is alright but you have to approve every request I make.
If you want to put your game in BetaTesting inside de iTunes Connect before to release, I can help you with that.
I would like to know the errors that you are obtaining right now wen you try to upload the build, It would be very helpful.
We can discuss how you will to share with me the project, that can be already compiled from Unity3D for XCode, you choose. If you have questions do not hesitate to ask.
As I said, because of the delay of Apple to give resolutions to each uploading, I can be flexible with the time.