Lusche answered your question perfectly as always but if you wanted to dig a little deeper into score and find out what does what try reading and comprehending one of these two.
http://thesquad.forumotion.net/aces-high-ii-help-f6/using-score-to-track-progress-t64.htm
http://bbs.hitechcreations.com/smf/index.php/topic,250035.msg3075606.html#msg3075606
Score is easy but don't let it get the best of you,.... it can ruin your game. Take the information with a grain of salt and score will just happen on it's own.
(http://tbn3.google.com/images?q=tbn:W53f9dv6PBxijM:http://www.magicweek.co.uk/images_tvmagic/tv_maskedmagician_anim.gif) The real secret to scoring is in plane allocation and knowing how to take a base..... skill of course is required :aok