To access and then share your app's URL address, you need to go to the specific app you wish to share.
Then select the settings icon. This will open the option to allow "Public view".
Turn on the "Public view". This will enable you to access the public URL and share it. The link is available in the field "Public Address".
You can also change the ending of your app's URL and it will be saved automatically.
📝 Additional insights:
If you want to share your form's URL too, here you can see how to do this: