Hello,
You should have one or more valid Creative Cloud for enterprise subscriptions (Creative Cloud for enterprise All Apps plan or Single App plans) for Photoshop, Illustrator, or InDesign. Please check the section "Creative Cloud prerequisites" here [0].
If prerequisites are met, then deploy the Asset panel [1] and test the connection with AEM.
[0] https://helpx.adobe.com/enterprise/admin-guide.html/enterprise/using/adobe-asset-link.ug.html
[1] https://helpx.adobe.com/enterprise/admin-guide.html/enterprise/using/deploy-adobe-asset-link-panel.u...
Regards,
Vishu