To get more points, you have to edit the "solmax.ini" file ehich you can find in the game directory. Change the corresponding lines so they read as follows:
score_max_combo=100000
score_undo=10
score_bonus_1=10000000
score_bonus_2=200000
score_bonus_3=300000
score_bonus_4=500000
score_bonus_5=10000000
score_place_to_house=100
score_place_to_place=1000
score_open_card=5000
score_popdeck_to_place=1000
score_popdeck_to_house=2000
score_combo_3=3000
score_combo_2=4500
score_combo_1=7000
score_level_inc=000