I want to create an ipa output for the Firebase App Distribution service.
I have tried to archive the project. Clicked "Distribute Content" and tried both "Built Products" and "Archive" options.
The archive option creates xcarchive file. Built Products creates an app file.
I want to get an ipa file and upload it to Firebase console.
Here is what I tried with images below.
First I create and archive and it opens the Organizer window as below.

Then I select the distribute button on the right. It shows me two options.

The first option is the "Built Products" option. I tried it as below and it asked me for a location to save files.

It creates the folder structure below, you can also see within the images, the names of the outputted files.
Output Folder -> Products -> Applications | Frameworks



The other option, "Archive", only outputs a single file

Please note that my question is for XCode version 11.1 on macOS Catalina