Yes, we know.

Note 1: even for pseudo code, you should use something == 2 instead of = 2.
Note 2: perhaps you should be more precise, eg. indicating how your timer will be used.

Im using it for a game.

When game starts, timer starts and when game ends timer stops

I believe that some libraries, such as G4P, have timer functionality...
It shouldn't be too difficult to implement, though.

You're going to need to use millis() to track time...
and store an int variable that holds the start time.

When the timer starts, assign the variable to be millis().
To read the timer, get millis() minus the variable.
When you stop the timer, assign the reading of it to a different variable... that will be the final time.

If you need start/stop functionality, then the entire thing will become more complicated...

i tried a stop thing (pause) but it was indeed complicated so i stripped it down to the basic again.