Hi there, hello66.
Welcome to the Community.
Transferring data from Xero to QuickBooks Online are processed within three to five working days upon receiving your data file.
Anyhow, I'd recommend to email your inquiries to email@example.com to know more about the conversion process.
To know more about transferring data to QuickBooks Online: Import Data Conversion to QuickBooks Online - Frequently Asked Questions.
After successfully transferring your data, you can run reports such as Profit and Loss and other transaction so you'll know the data was converted perfectly. Check out this article for future reference: Run reports.
Fill me in if you have any other concerns or question. I'm always here to back you up. Have a great day!