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