[hedora]

It is in fedora and debian testing, but not stable. It made it into redhat 9, but none of the earlier ones or centos.

Source:

https://distrowatch.com/

Oddly, they say it is in openbsd. I thought they moved off openssl years ago. (It might be good to take the other things I said with a grain of salt.)

[Beltalowda]

OpenBSD uses LibreSSL in base, but they provide OpenSSL ports/packages, including for OpenSSL 3: https://openports.se/security/openssl/3.0

I don't know if any other ports use it; they try to make them work with LibreSSL, but maybe a few ports use OpenSSL 3.