Battle and war

does anyone know what exactly this phraise means? please help

It's about like "You scored a few points there, but in the end your team lost the game." Does that help?

It's a "pyrrhic" victory. From the dictionary:
Main Entry: Pyr·rhic
Pronunciation: 'pir-ik
Function: adjective
Etymology: Pyrrhus, king of Epirus who sustained heavy losses in defeating the Romans

achieved at excessive cost ; also : costly to the point of negating or outweighing expected benefits