Steps to import/export views in Drupal 9

You can always create a view manually, and change the configuration one by one manually. And, all done. But, still, there is a chance of manual error. Drupal9 allows you to import-export views.
You can follow the below steps to Import and Export views

• Go to Admin/Configuration/Development/Configuration Synchronization. You will See Synchronize title and 3 tabs: Synchronize | Import | Export
• Click on Export. You can see two items:
  Full Archive | Single Item
• Click on Single Item
  You will be asked for configuration type from the drop-down.
  Select View
• Second drop-down: "Configuration name", will be populated with all the views.
• Select the desired view.
• As you select, the next text area: "Here is your configuration" will be populated with a yml
• You need to copy this yml

Now go to the site, where you want to import that view. Follow the steps

• Goto: /Admin/Configuration/Development/Configuration Synchronization/Import/Single item
• Configuration type as View
• Paste the yml in the textarea showing next.
• Click on Import

If you see no error, your view has been successfully imported.

Reference

https://drupal.stackexchange.com/questions/190264/how-do-i-export-import-views