So, I found this in the arch wiki :
Fprint
Fingerprint GUI
And I found that the equivalent directory that it meant for Solus is usr/share/defaults/etc/pam.d I didn't found the equivalent file in Solus however
fprintd is there in the repo but is there any use for it if we can't use it to login or to the very least use it for sudo?
fprintd-enroll works just fine