Hi @hxo82,
Not out-of-the-box so far as I can tell.
Looks like there were past requests for this, according to this: [OJS] Reviewer Rating Stats Missing · Issue #4832 · pkp/pkp-lib · GitHub
And it is suggested for someone to create a feature request for this, so if you wanted to do that in a separate post (or edit this one), so our development team can have it on our radar, that would be welcomed.
-Roger
PKP Team