Follow these steps to display the VF page:
1. Go to Setup -> enter Visualforce Pages in the Quick Find box -> select Visualforce Pages to display the Pages list page, which shows all the Visualforce pages defined for your organization. From the Pages list page, you can:
2. Click New to define a new Visualforce page.
3. Click a page name to display detailed information about the page, including its label and Visualforce markup.
4. Click Edit next to a page name to modify the page’s name, label, or Visualforce markup.
5. Click the Preview button (Launch) to open the page in a new window.