When you have finished entering your scores, you can click on 'review scores':
You then have a chance to review the details entered and click on 'edit scores' if necessary to amend anything that is incorrect:
Once you have hit save you can no longer edit the round as doing so sends the round for processing, which includes your handicap calculation if applicable and all of your stats analysis.
If you have clicked save and would still like to edit something, email support@vpar.com with the name and date of the round and the score that needs to be edited and the team will take care of this for you.