How to transfer files from CD/DVD onto iPad Pro?
There’s no native way read a digital disc on an iPad, and I don’t think a 3rd party manufacturer makes such a solution.
You will need to extract these files from the discs on a computer, macOS or Windows, then upload them to whatever cloud service you’re using to make them available on the Internet to your iPad. If you don’t have a cloud service, iCloud is one option, as nohillside mentions above, but there are others such as Dropbox or Google Drive. Dropbox and Drive have iOS apps to handle file transfers. I use all three cloud services on my iOS and macOS devices.
Disclaimer: I am not an employee of Apple, Dropbox nor Google.