I need to know that my QB online account is UK version or US?

It's great to see that you've posted in the Intuit Community, mr-a-mehmood! 

I'd be more than happy to assist you in checking the region you're using for your QuickBooks Online (QBO) account. 

To view your company information, you can visit the Account and Settings page. If the Company name section displays the Companies House Registration Number (CRN), then you're using QBO UK. But if it shows EIN, then you're using QBO US. 

To verify, just follow these simple steps:

1. Click on the Gear icon at the top. 
2. Choose Account and settings. 
3. On the left menu, select Company. 
4. Go to the Company name section.
5. Check if it's CRN or EIN. 

You can also visit our Community Help page to get some useful tips and related articles that may help you manage your business efficiently in QBO. 

If you've got any further questions about your QBO subscription, feel free to comment below. I'm always here to assist you. Have a fantastic day!