Immunity and pardons are only valid for federal charges. Each state can render charges.
I think was is being suggested is Beshear would give a preemptive pardon to Fauci for the state of Kentucky.
“Each state can render charges.”
And each state’s governor can decree blanket pardons, I suppose.
That’s OK, there are enough red states’ governors / AGs to make the rest of his diabolical life a living hell before he lands in Actual Hell.