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Here's everything you need to know about purging a company in QuickBooks.
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Thanks for getting back here, Chandhan Kashyap.
The purge function is only available when your company file is less than 30 days old. For more than 30 days, you will have to subscribe to a new company.
To create a new company, you can follow these steps:
Once you have the new company, you can export your list and reports to Excel. Then, import the data in your new QuickBooks Online account.
I'm adding these articles for reference:
If you need more help with QuickBooks Online. Please feel free to leave a reply to this post and I'll get back to you as soon as possible.