The text field allows users of your app to add or edit text which will sync with your sheet.
When you add a text entry component, make sure to bind it to the column that you want users to be able to edit the text of. This could either be a blank column where users can add new data, or it could be a column that you pre-populate with text that users can amend.
To help your users understand the purpose of the text field, you can add a title and hint text. These are independent of your sheet.