You can watch the video or follow the steps.
Visit the Atlassian Marketplace and search for JFrog.
You should see the JFrog Platform: Artifactory App for Jira. Click on the icon on the top-right and hit the Get it now button.
The JFrog app installs into your JIRA instance.
Once installed, a pop-up appears on the top-right of your screen. Click on Get started.
A prompt appears asking for your Artifactory Cloud URL and API Key.
Make sure you are logged into your Artifactory cloud instance. Copy the first part of the URL for your Artifactory Cloud instance and paste it into the JIRA Initialization screen for Artifactory Cloud URL.
Create a scoped token. You'll need to have admin permissions
As an admin, log into your Artifactory SaaS instance, click on gear icon near top left, open User Management, click on Access Tokens. Click on Generate Token at top right, click Generate.
Copy the token into the JIRA Initialization screen and click Submit.
Once you get the notification that the initialization was successful, you can go back into your JIRA Cloud instance.