app_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item android:id="@+id/rate_us"
        app:showAsAction="never"
        android:title="Rate us"/>
    <item android:id="@+id/share_app"
        android:title="Share App"
        app:showAsAction="never"/>
    <item android:id="@+id/privacy_policy"
        android:title="Privacy Policy"
        app:showAsAction="never"/>

</menu>

MainActivity.java

public class MainActivity extends AppCompatActivity {
 
  @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
   
               
    }
    
     @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.app_menu,menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()){
            case R.id.rate_us:
                Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=" + "com.putechnodev.civilmcqquiz"));
                startActivity(intent);
                return true;
            case R.id.share_app:
                Intent i = new Intent(Intent.ACTION_SEND);
                i.setType("text/plain");
                i.putExtra(Intent.EXTRA_TEXT, "My app name");

                i.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                String strShareMessage = "\nHey!  I Got new amazing App For preparation of civil engineering and GATE exam\n\n";
                strShareMessage = strShareMessage + "https://play.google.com/store/apps/details?id=" + "com.putechnodev.civilmcqquiz";

                i.putExtra(Intent.EXTRA_TEXT, strShareMessage);

                i.setPackage("com.whatsapp");
                startActivity(i);

                return true;
            case R.id.privacy_policy:
                Intent intent2 = new Intent(Intent.ACTION_VIEW, Uri.parse("https://prnc.flycricket.io/privacy.html"));
                startActivity(intent2);
                return true;
        }


        return super.onOptionsItemSelected(item);
    }

    
  }