Is there any way I can download a list of policies from Qualys library?
No, you can't download the policies from the library. However, the policies that you've imported into your subscription (Policies > New > Import from Library) can be exported.
The policy definitions you see in Qualys are mappings created from the vendor benchmarks. These are published on their website and can be downloaded.
List of CIS benchmarks: https://www.cisecurity.org/cis-benchmarks/
Not an answer to your question, but maybe of interest.
Here are all of the Policy Library update announcements: https://blog.qualys.com/tag/library
Thank you Shyam!
Retrieving data ...