How should I proceed?
Why does it ask me to upload a build, how do I upload it?
Hello please I suggest you start a thread for another question. In this way, other users can find and access their problems directly.
I will help you as far as I know.
After installing with icloud, your app should appear in the Activity section.
Here you will wait for it to be processed for a while. (5-10 minutes maximum)
If it appears here and your application does not appear after a while, it means that your application does not accept apple due to a problem. Apple will send you an e-mail for this.
This email will also tell you what the problem is.
If there is no problem, you should select your application with a big blue button in the Build section.