IF statement wont allow me to set text in textview

I have an app that gets data from a mysql database. I have included the code below. For some reason I am able to set the text of the textview manually but when I try to set it with the use of an if statement to change the category depending on score then it doesnt update the text view. I have no idea why this is

public class Category extends AppCompatActivity{

private TextView game_id;
private TextView team_name;
private TextView scoreTV;
private TextView category;
private Button readyToPlay;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_categories);
    game_id = (TextView) findViewById(R.id.tvGameID);
    game_id.setText(getIntent().getStringExtra("game_id"));
    team_name = (TextView) findViewById(R.id.tvGameID);
    team_name.setText(getIntent().getStringExtra("team_name"));
    scoreTV = (TextView) findViewById(R.id.tvScore);
    category = (TextView) findViewById(R.id.tvCategory);
    readyToPlay = (Button) findViewById(R.id.rtpButton);



    getData();

}


private void getData() {
    String teamName = team_name.getText().toString().trim();
    if (teamName.equals("")) {
        Toast.makeText(this, "Please enter an id", Toast.LENGTH_LONG).show();
        return;
    }

    String url = "http://ift.tt/2wuw1Il"+game_id.getText().toString()+"&& team_name="+ team_name.getText().toString();

    StringRequest stringRequest = new StringRequest(url, new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            showJSON(response);
        }
    },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    Toast.makeText(Category.this,error.getMessage().toString(),Toast.LENGTH_LONG).show();
                }
            });

    RequestQueue requestQueue = Volley.newRequestQueue(this);
    requestQueue.add(stringRequest);
}

private void showJSON(String response) {
    String score = "";
    try {
        JSONObject jsonObject = new JSONObject(response);
        JSONArray result = jsonObject.getJSONArray("score");
        JSONObject collegeData = result.getJSONObject(0);
        score = collegeData.getString("score");

    } catch (JSONException e) {
        e.printStackTrace();
    }

    scoreTV.setText(score);

    if (score.equals("0")){
        category.setText("Object");
    }

    }

}