Uploading via the Transporter app
Log in to the Transporter with a valid Apple ID with which the app's required IDs', certificates, and profiles are created.
Simply drag and drop your ipa into Transporter to get started.
Validate the app by clicking the 'verify' option under the '…' button.
Once the app is verified, click the 'Deliver' button to upload in the app store.
View delivery progress, including validation warnings, errors, and delivery logs, so you can quickly fix any issues.
How to add test flight users?
Log in to 'App Store Connect' with the valid Apple ID in which the app's required IDs', certificates, and profiles are created.
Click on the newly installed tvOS app.
Navigate to the 'Testflight' menu.
Through left pane, click 'Test information' under 'General information'.
Fill in the required details:
Create a testing group and choose internal testers email id, to send invite to those who wants to test the app
To add external testers, create a group under 'External Testing' and add the email IDs to send an invite to test.
In the testing group, click the + icon near the 'Build' section and add choose the build to tested.
With this, an email invite will be sent to all mail IDs' added.