Hello, Purnima
Information Steward scorecard URL is static url for your environment and the url will not change when you make changes to rules or scorecard.
When you make changes to existing rules (that were bound to a scorecard) and execute the changed rules, you can navigate back to scorecard and change view option to "Now" and your score will be refreshed to reflect the rule results.
If you add new rules, you need to go back to scorecard configuration screen and configure the new quality dimensions (if any), new rules and new bindings. Once you are done making changes to your scorecard configuration, you can navigate back to scorecard and change the view to "Now" and you should see the scorecard refreshed with your changes.
You can schedule your scorecard refresh from CMC to refresh the scorecard automatically.
Hope the above information helps.
Thanks
Sreeram