Java score is not increasing with if statements

For my java trivia game, I set the questions in the beginning, e.g.

if(command.equals("question 1"))
    {
        txtAnswer.setText("");
        q1 = true;
        btnQ1.setEnabled(false);
        lblQuestion.setText("What is 2 + 2?");
        lblOutcome.setText("");
    }

        

and then after all the "if"s for the questions, I have code that verifies if it is correct or not, and if it's correct I increase the score. This is the code I use:

if(command.equals("Check")&& (txtAnswer.getText().equalsIgnoreCase("4") && (q1)))
        {
            q1= false;
            lblOutcome.setText("Correct");
            score = score +1;
            lblScore.setText("Current Score: " + score);
            
        }
        else if(command.equals("Check")&& (!txtAnswer.getText().equalsIgnoreCase("4") && (q1)))
        {
            q1= false;
            lblOutcome.setText("Incorrect");
            lblScore.setText("Current Score: " + score);
        
        }
        
        
        
        if(command.equals("Check")&& (txtAnswer.getText().equalsIgnoreCase("8") && (q2)))
        {
            q2= false;
            lblOutcome.setText("Correct");
            score = score +1;
            lblScore.setText("Current Score: " + score);
            
        }
        else if(command.equals("Check")&& (!txtAnswer.getText().equalsIgnoreCase("8") && (q2))
        {
            q2= false;
            lblOutcome.setText("Incorrect");
            lblScore.setText("Current Score: " + score);
            
        }
        

But the problem I'm having right now is that the score is not increasing, it just completely resets to 0 after each question so if I get all the questions right, the score remains at 1. I was wondering what I have to do to fix this?

Edit: this is where wrote the code

private static class ButtonHandler implements ActionListener
{
    public void actionPerformed(ActionEvent e)
    {
        String command = e.getActionCommand();
        int score = 0;