Thank you for posting in the Community, @raju-bagratee-aq. I'm here to guide on how you can get a copy of your data in QuickBooks Online (QBO).
The process of copying QuickBooks data depends on subscription type. If you're a Plus, Essentials, or Simple Start user, you can export your reports, names, and other data.
Here's how:
From the Gear icon, select Export data.
Head to the Reports tab and set the date range.
You can add or remove items from the Reports and Lists by turning the switch on or off.
Click Export to Excel.
You can also export your non-posting transactions that are not included in Reports and Lists. If the data has been successfully exported, you'll receive a confirmation.
Furthermore, if you're using QuickBooks Online Advanced, you can use the back up feature. Please make sure to download all payroll forms as well.