Very often i backgammon the match score does matter on how the position is evaluated. GNU Backgammon's evaluation algorithms does take the score into account. You can therefore adjust the the match length and the score to each player while you're in edit mode.
In the figure you see that the score fields are editable while you're in edit mode. Insert the desired match score for each player in these fields. Player 0, the top player, has the left score field and player 1, the bottom player, has the right score. You can also set the match score in the in the match field to the right. There is also a box to tick whenever the position is from a Crawford game.
If you want the computer to do a money game evaluation of the position, you should set the match score to 0 (zero).