Go to your form’s Results tab. Then, right-click on the input you need to Edit it.
You’ll be redirected to the form pre-filled with the respondent’s answers. Edit any input there and click Submit.
You can also send the link of this pre-filled form to the respondent in case they want to edit their answers.
Good to know: Editing form submissions automatically updates data synced through integrations. This will update existing records in Airtable or Notion, send new alerts on Slack, update Dropbox folders, and etc.