Hi @jeffresc,
You could use the “Export All IPs” button from the “Wordfence –> Blocking” page to retrieve the lists of all currently blocked IP addresses and then feed that list to a custom script based on the “Create access rule” method of the Cloudflare API.
However you could end up with a very long list of blocked IPs in your Cloudflare access rules; and it’s also important to note that depending on your Wordfence Firewall settings a blocked IP might not necessarily be involved in anything malicious (for example, a user’s IP could be blocked because they misspelled their username).
Furthermore, IP addresses can be reassigned so it could eventually permanently block (at Cloudflare level) genuine visitors.