The scratched disk should not has any effect on the Windows installation or functionality.
Either you can start the Recovery from scratched disk or not.
If you are not able to start the recovery because the disk cannot be read, then you will need a new one. But if you can start and finish the recovery procedure using such disk, then the Windows OS should be installed properly.
To be honest I don’t know what else you want to know.
If your recovery disc is scratched create new one.
If the recovery disc is readable and all data can be read by ODD then there is no problem with scratches.