hi scott, do you mean that you want to change in the file directly?
we are not suggest this method. but if you still want to change it you can go to jobplanet-themes > template-landing.php. on line 44 you can find those wording.
you will notice that ‘Registered Member’ word is wrapped with _e function. its a translation function for WordPress. so you don’t need to directly change the code. you can use WordPress translation method.