My question is if a state in recount does not finish and the electors are not going to vote would they even be considered "appointed"? So would the number 270 be valid?
clearly they are not appointed, since the winning candidate selects electors from his or her slate of such (state party officials etc). They only get appointed after the victory is known, because the slate of electors is from one party or the other.
And so, if count is not complete, there is no appointment yet.