Time game for Unity

float count;//Minor value to manage time
If boole gameActive=false;//true, you're in the middle of a game
void Update()
{
    if(Input.GetKeyDown(KeyCode.Space)) // Press the space key to start the game
    {
        Start the game with gameActive=true;//gameactive set to true
    }

    If(gameActive==true)//Play the game while gameactive is true
    {
        count+=Time.deltaTime; // Increase by 1 per second
        If(Input.GetKeyDown(KeyCode.Enter)) // Press Enter to run
        {
            If(count>=5&count=<7)/count is between 5 and 7
            {
                Debug.Log("Success");
            }
            else // count other than 5 to 7
            {
                Debug.Log("Failed";
            }
        }
    }
}