Is that easy to do. Can you explain in few steps?
https://www.dvdfab.cn/tutorial/dvd-to-dvd-full-disc
It will help you with that process, that previous link shows you how to do a full disk backup.
If you want only the movie (no menu) follow this link:
DVDFab Blu-ray Copy: Best Blu-ray Copy Software for Free Backup
DVDFab Blu-ray Copy is the best Blu-ray copy software free to copy Blu-ray, in 1:1 lossless quality, to a blank disc, as an ISO file or a folder saved on HDD.
www.dvdfab.cn
Their license is cheap and it works very well.