1. Log in to your WordPress dashboard and navigate to the “Appearance” menu. Select “Widgets” from the options.
2. In the widgets area, you will see a list of available widgets on the left side and your active widgets on the right side.
3. Scroll down to the “Search” widget and drag it to the appropriate sidebar or widget area on the right side.
4. The search bar widget should now be added to the sidebar or widget area you selected.
5. You can also customize the look and feel of the search bar widget by clicking on the “Customize” button in the widget settings.
6. To display the search bar widget on a specific page, go to the page editing screen in WordPress.
7. Look for the “Widgets” section in the page editor and add the “Search” widget to the sidebar or widget area of the page.
8. You can also use a plugin like “Advanced Search Widget” to add an advanced search option on your website with more options and functionalities.
9. Once you are finished, save your changes and view your page to see the search bar widget in action.

Please note that the steps and options may vary slightly depending on the version of WordPress and theme you are using.