The most important thing is not the number of deaths, killings, or help; the main thing is to destroy the enemy base. Even with a negative score, you will win if you destroy the Ancient first.
What is MMR DotA 2? DotA 2 MMR rating is a statistical indicator of your ability to play. Over the entire period, there have been many changes in how the new MMR DotA 2 system currently looks.