Can anyone help me close my account without any charge???

Detailed advice on terminating resources you don't need any more is here https://repost.aws/knowledge-center/terminate-resources-account-closure

A drastic option if you want to terminate all running resources is AWS Nuke (caution: use with care!) https://docs.aws.amazon.com/prescriptive-guidance/latest/patterns/automate-deletion-of-aws-resources-by-using-aws-nuke.html

If you want to close your account the instructions are here https://repost.aws/knowledge-center/close-aws-account

Close your account

To close your AWS account, do the following:

1. Sign in to the AWS Management Console as the root user of the account.
2. In the navigation pane, choose your account name, and then choose Account.
3. Scroll to the Close Account section.
4. Read and understand the terms of closing your account.
5. Choose Close Account.

Within a few minutes, you receive email confirmation that your account is closed.

Also see https://docs.aws.amazon.com/accounts/latest/reference/manage-acct-closing.html