So for this one I decided to change the uppercase score denominators into numbers, 1 = A, 2 = B and so on.
Next I used formulas with Regex CountMatches to count the number of instances of each score denominator by round.
I used a select tool to change the fields to 'double' before the next round of formulas.
To calculate the score of each player in each round I then just used formula's to subtract the negative scores from the total of positive scores. A select tool was then used to remove the now irrelevant columns and rename the relevant ones.
A transpose tool followed by a cross tab was then used to get the round numbers as the column headers and grouped by the score of each player. A select tool was used to rename the column headers and a final formula was used to calculate the total score of each player.