Unable to enable the Cisco, checkpoint and Palo alto cloud firewall in Sentinel

Anurag65 you appear to be using a Free Trial subscription - I'd imagine that has much smaller quotas that a paid for one.

I'd check out the quotas section of your Azure Subscription (go to Subscription, Select Usage + Quotas.)

You can request an increase in the quotas from there as well.

The error message refers to the Regional CPU Core quota 

Anurag65 Did you click that link for more information? I'd be interested to hear the quota limits are hampering your deployment.

And, btw: That's the marketplace CheckPoint Cloudguard setup you show in the screenshot, not the Sentinel connector.