Note: This procedure requires editing a game file; creating a backup copy of the file before proceeding is recommended. With a text editor, edit the "scoringCommon.py" in the "\ea games\battlefield 2\mods\bf2\python\game\" folder. In this file you will see score list for different events, which can be changed as desired. Be careful, as it also works for enemy soldiers.
SCORE_KILL = 50 SCORE_TEAMKILL = 40
The same thing can be done for the "gpm_cq.py" file in the "ea games\battlefield 2\mods\bf2\python\game\gamemodes" folder.