Problem to open Parallels Desktop with Mac OS Big Sur

Hi. I have a problem with parallels desktop for Mac. "Parallels Desktop cannot be started because some of the required components are missing from the operating system of your Mac." My version is Version 10.4.0.
I installed Mac OS Big Sur few weeks ago. Thanks to Parallels I installed Windows 10 and my accountancy software. I didn't finished and closed my accountancy's 2020 exercise. I'm afraid to lose my datas. What can be done without lose my data ? Thanks for your help

 

Parallels Desktop 10 is not compatible with Big Sur. Purchase an upgrade to the latest build and you can use the existing virtual machine with it.

 

Thanks for your answer. if I upgrade to the latest version and install it, won't it overwrite the existing virtual machine with all the data it contains like my accounting for example?