Note: Your question may already be answered in the Bitwarden Help Center.
We have enterprise subscription, but SSO is not available as an option under business portal (or I am missing something).
SSO is available for our current enterprise plan (released in September of this year) - if you’re on a previous plan you’d need to swap to the new plan.
More on that here: https://bitwarden.com/blog/post/bitwarden-password-manager-login-with-sso/
Our response times are usually very quick - if you have not received a reply I would check your spam to be sure.