Once you install the plugin, you will have access to the TalkType element in the Bubble editor. Drag this to the page and you will then be able to access its element actions and exposed states.
For example, place a multiline input on the page where you want the final transcribed text to appear and use the 'Final Transcript' state as the initial content (insert dynamic data > Talk Type A's final transcript).

If you would like to display partial results to the user, place a text element on the page, ideally near the text field and use the 'Interim Results' from the plugin as above. Displaying partial results creates a more delightful user experience as the final text can take a few seconds to appear.

Additionally, you can use 'Is Listening' and 'Notifications' state to wire up a cohesive user experience, like changing the colour of the button / icon to start and stop the dictation.