Where can I watch my statistics?
How many match I'm winned/loosed?
How many decap I done?

You can check it from shop. There you see there is "account".

Decaps i dont think you can check it out

win/lose is off your %

Figure the % by using your Qi

Like what's 54.80% out of 1215
you will get the winning amount, then subtract that much from 1215, and that will be your losing amount

You are only aboe to watch:
Qi and win% in Shop.
Also you can do the same ingame, /stats username
Cheers

go to bottom wher eyou see achivements
Well there you see ingame earnings
That for how many you won etc
for decaps
go to achivements
And press the 100 decap achivement
that should say how much you still need and how much you already made

It only shows the number of decaps of the current week.

I know but i dont think there is somewhere at toribash where you can see your total decaps

Ok guys I'm not an idiot
I just want to know there is any kind of torispy where I can know how many match I winned/loosed...

http://tori.illepidus.ru/torispy/?username=<USERNAME HERE>

It doesn't work any more for some reason. "Internal Server Error"
When it was working, it could tell the matches won or loss.

Maybe this helps a little? http://forum.toribash.com/tori_earnings.php
At top you see how much games you won in total
Take youre qi
Take of the won matches
And you have the lost matches