Enter applinks:<web domain>. Replace <web domain> with your own domain name.

You have finished configuring the application for deep linking.

3. Hosting apple-app-site-association file

You need to host an apple-app-site-association file in the web domain.
This file tells the mobile browser which iOS application to open instead of the browser.
To create the file, get the app ID of the Flutter app you created in the previous step.

App ID

Apple formats the app ID as <team id>.<bundle id>.

Locate the bundle ID in the Xcode project.

Locate the team ID in the developer account.

For example: Given a team ID of S8QB4VV633
and a bundle ID of com.example.deeplinkCookbook, The app ID is
S8QB4VV633.com.example.deeplinkCookbook.