How many offices were on the Georgia ballot this election?

So far, Georgia has found over 5,000 ballots that were not counted. Did those ballots also provide voting for Senators and not just President? While Tump cannot get enough votes to change the results of the election in Georgia, does that also mean the race for Senators could not be changed? Maybe, after all the ballots are checked and counted, is a runoff election really needed or did one candidate, either Osoff or Perdue, actually win the 50% plus 1 that is needed to prevent a runoff and have a winner? How many more uncounted votes will Georgia find?