Yes, it would be reflected in the refund monitor at the top of your screen. When you select the option to amend your already filed return - be sure to go through the entire questionnaire so that you are certain to make any/all changes necessary - and that you do not miss the section pertaining to the recovery rebate credit. Once you get to that section, be sure to answer as you should have the first time around and you'll then see the amount that you should have received but did not receive then populated. You will need to go through the whole process so that the system has a chance to calculate everything properly - this will ensure that it all gets added up right. For a "double-check", you can click on the "forms mode" icon at the top right of the screen once you are all done (at the end of your return, just before you e-file) and view your Federal 1040x to see the credit listed there.
