In the attached DB, I have modified the query qryHighestGame to include the calculation of high score 1,2, and 3. So now HighGame will be shown even if only one score is entered in the Scores table.
As Series is set as [Score1]+[Score2]+[Score3] in the query "Scores Query", HighSeries will be shown only when score 1,2 and 3 are entered.
However, if you want to show HighSeries even if only one score is entered, you can simply change it to nz([Score1],0)+nz([Score2],0)+nz([Score3],0) in the query "Scores Query", as query "qryHighestGame" is built on "Scores Query".
Hope it helps.
As I am not familiar with the terms Game, Score1,2,3, Series, HighGame, HighSeires as used in bowling, I built the queries by studying the connections of the figures HighGame 231 and HighSeries 633 in the Bowlers table with the figures in the Scores table and the query results of the "Scores Query". I hope I haven't messed things up.