Hi @riyaz shaik ,
the quota limit of "Public IP addresses with 'Internet' routing" is 10 per Azure Subscription.
To increase the quota limit you have to contact Azure Support.
Source: Public IP address limits
Create an Azure support request
Azure Billing and Subscription support is offered by Microsoft by no cost and it's for free.
Source: Azure Support plans
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten