Click on the Add Source
Select the Application as Shopify
In What would like to do option select Listen for real-time data from the source application
Then I select an existing listener
Then Click Next
Then create Webhook in the Shopify account
For this click on Settings>Notification>Create Webhook option from the bottom
Select the Event eg: customer creation
Format as JSON
select your Webhook API Version
URL as the Public URL, which is automatically created when we edit the listener
Then Save this
Then we get a value, which can be used to sign in
copy and paste it into the Key(Secret) option in Edit Listener page
Then Enable the flow