Hello there, Hamid_Khan.

Thanks for checking the VAT settings.

We also need to make sure that we've selected the correct accounting method when you pull up the VAT 100 Report. Choose Cash to include only the money you’ve paid or received. While the Accrual include open invoices and bills. You'll want to check this article for your reference: Choose between cash and accrual accounting methods in reports.

Aside from that, make sure that we have set the correct reporting period. This will filter the data showing in the report.

I've included this link as your reference about customising reports in QuickBooks Online.

I'll be here if you need more help. Have a great day