@Ananay Ojha Thank you for reaching out to us, As I understand you are trying to setup sso & user provisioning with AWS IAM identity center.
From the screenshots which are provided in the query, I notice the app which you added from gallery is different than what is mentioned in our docs, I added the same app in my tenant and below is the screenshot which I see for provisioning (where as your screenshot is different )
Review step 2 in this article - https://learn.microsoft.com/en-us/entra/identity/saas-apps/aws-single-sign-on-provisioning-tutorial to get tenant url and secret details from aws identity center portal.
Review this for SSO setup - https://learn.microsoft.com/en-us/entra/identity/saas-apps/aws-single-sign-on-tutorial
Let me know if you have any further questions, feel free to post back.