How to pass variables to a new activity in Android (Android Studio)

Android Pass Variable

 //step 1:
 import android.content.Intent;
 
//step 2: add to activity you want to sav variables from
 
Intent i = new Intent(getApplicationContext(), ActivityName.class);
            i.putExtra("someVariable","variableValue");
startActivity(i);

//step 3: add to activity you want to pulll variables from
Bundle extras = getIntent().getExtras();
        if (extras != null) {
            String someVariable = extras.getString("someVariable");
            }

So following the instructions above, I am trying to pass the variable TotalScore to new activity as such:

public void button_next(View view) {
// Do something in response to button next
Intent i = new Intent(this, DisplayMessageActivity.class);
i.putExtra("TotalScore", "0");
startActivity(i);
}
On new activity, i get an error for unidentified class called extras as such:
Bundle extras = getIntent().getExtras();
if (extras != null) {
String TotalScore = extras.getString("TotalScore");
}

What am I doing wrong? Pleasing let me know. Thanks in advance.

This is can use on fragment ?? I think intent can't use in fragment ,right!

String TotalScore = (String) extras.get("TotalScore");
textview.settext(totalscore);

this can be done like this sir

This is really help full thanks @uknowmeright

if i want to pass name,description and a web link.Than what should i need to do ?