I am new & try to have my First application on App Store.
I have made this app in UNITY (5.6).
The issue I\'m Facing is the size of Archive gene
The bigger is the better for your case.
Upload it, and you will see, in Testflight section (iTUnesConnect -> Your App -> Activity -> All Builds (left panel) -> Your build -> AppStore Size link), the real size of your app for each iPhone/iPad. for example i uploaded a 150Mb size bundle, and finally, the .ipa size for iPhone 7 is only 40Mb.