Time based scoring

Hello I am working on a game, can anyone tell me how to calculate the score based on seconds?
For instance if the player plays for 10 seconds the score will be 10; 1 second = 1 point;

var startTime: float;

function GameStarts()

function CalculateScore(): int 
   return ( Time.time - startTime);

Because time is granular , if you wanted to do you could multiple the result by 10 and have a score that has fractions of a second.

It displays mili-second because u have assigned the score avriable as float.

var score : int;

now the scoring will in fixed value

what you can also do is :

var score : int

function Start()
   score = 0;

function Update()
   score = Time.timeSinceLevelLoad;