Is there a contractor version for QBO?

No. You need a 3rd party app to integrate with QBO.

Hi there, @nathalie-empire2. Thanks you for taking your time posting in the Community.

@Fiat Lux - ASIA is correct. Currently, the contractor version is unavailable in QuickBooks. As a workaround, you can integrate QBO with a third-party application that has the specific features you need.

If you have subscribed to QuickBooks Online, you can go to the Apps menu and enter a keyword in the search bar. It will automatically show the list of the apps you can use. To view the features offered, you can click on the app. After that, you'll see the description, plans, and even the reviews.
 

This is what it looks like:

If you have any questions, I will be delighted to help you further! I hope you have a good day. Be safe!