Please give me enquiry related to last charged for vpc of 0.22$ as vpc is free

Hello.

Could you please share the invoice details?
You need to check which items in your VPC are incurring costs.
https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/getting-viewing-bill.html#accessing-your-monthly-charges

Or check the breakdown of VPC costs by following the steps at the URL below.
https://repost.aws/questions/QUelBAhchWSm-9IcmSv3IybQ/how-to-break-down-vpc-costs#AN1WQakXDeSOG4GPT9WAPj1g
The Cost Explorer console should look like the image below.

VPC costs include public IPv4, ElasticIP, NAT Gateway, etc.
https://aws.amazon.com/vpc/pricing/?nc1=h_ls

If the charges are related to public IPv4, you can also search which AWS resources are associated with them using the steps on the AWS blog below.
https://aws.amazon.com/jp/blogs/aws/new-aws-public-ipv4-address-charge-public-ip-insights/