i have installed Warhammer with GOG, but when i click "play", the game don't run. I don't know why

Hello,
you might want to take a look here: https://www.gog.com/forum/warhammer_mark_of_chaos_gold_edition

There are a couple of threads already that deal with similar issues... I don't know, they might be helpful:
https://www.gog.com/forum/warhammer_mark_of_chaos_gold_edition/crash_on_launch_w_solution
https://www.gog.com/forum/warhammer_mark_of_chaos_gold_edition/game_wont_launch
https://www.gog.com/forum/warhammer_mark_of_chaos_gold_edition/for_those_having_trouble_starting_the_game_on_integrated_graphics_cards

Alternatively, you could try opening a thread asking for help there (and provide some details).