EduKids theme does not support navigation menus or widgets.

I am unable to add menus when using the following Theme kit.

I tried multiple theme kits, it is the same issue.

Some one asked me to do this, but I am unable to find this functions.php file:

If the menu option does not appear, then you need to add theme support for menus. Add the below line into your functions.php file.

add_theme_support( 'menus' );

I don’t see the Theme Editor option under Appearances

I am a newbie please help.