How many default VPCs can you have?
You can have one default VPC in each AWS region where your Supported Platforms attribute is set to "EC2-VPC".

https://www.interviewquestionspdf.com/2017/01/how-many-default-vpcs-can-you-have.html
You can have one default VPC in each AWS region where your Supported Platforms attribute is set to "EC2-VPC".