Forgive me, because I'm still trying to find the finesse of Mojo::DOM.

Below is the first return I get from $dom->find('.ipl-zebra-list');

But I want to narrow it to the table class that has "USA", which right below it has the class "release-date-tem"m which has the date.

Certainly there must be some sort of "tree" functionality that I can use in Mojo::DOM to get to that last line. I promise you, I'm not just asking you to get the answer. At the same time I am scouring the internet for examples.

Thanks for all your help so far.

<table class="ipl-zebra-list ipl-zebra-list--fixed-first release-dates
+-table-test-only">
                <tr class="ipl-zebra-list__item release-date-item">
                    <td class="release-date-item__country-name"><a hre
+f="/calendar/?region=au&amp;ref_=ttrel_rel_1">Australia
</a></td>
<td align="right" class="release-date-item__date">17 July 2020</td>   
+                     <td align="left" class="release-date-item__attri
+butes">                            (internet)
</td>
                </tr>
                <tr class="ipl-zebra-list__item release-date-item">
                    <td class="release-date-item__country-name"><a hre
+f="/calendar/?region=nz&amp;ref_=ttrel_rel_2">New Zealand
</a></td>
<td align="right" class="release-date-item__date">17 July 2020</td>   
+                     <td align="left" class="release-date-item__attri
+butes">                            (internet)
</td>
                </tr>
                <tr class="ipl-zebra-list__item release-date-item">
                    <td class="release-date-item__country-name"><a hre
+f="/calendar/?region=sg&amp;ref_=ttrel_rel_3">Singapore
</a></td>
<td align="right" class="release-date-item__date">10 December 2020</td
+>                        <td align="left" class="release-date-item__a
+ttributes">                            (limited)
</td>
                </tr>
                <tr class="ipl-zebra-list__item release-date-item">
                    <td class="release-date-item__country-name"><a hre
+f="/calendar/?region=ca&amp;ref_=ttrel_rel_4">Canada
</a></td>
<td align="right" class="release-date-item__date">11 December 2020</td
+>                        <td align="left" class="release-date-item__a
+ttributes">                            (internet)
</td>
                </tr>
                <tr class="ipl-zebra-list__item release-date-item">
                    <td class="release-date-item__country-name"><a hre
+f="/calendar/?region=us&amp;ref_=ttrel_rel_5">USA
</a></td>
<td align="right" class="release-date-item__date">11 December 2020</td
+>                        <td class="release-date-item__attributes--em
+pty"></td>
                </tr>
                <tr class="ipl-zebra-list__item release-date-item">
                    <td class="release-date-item__country-name"><a hre
+f="/calendar/?region=nl&amp;ref_=ttrel_rel_6">Netherlands
</a></td>
<td align="right" class="release-date-item__date">7 January 2021</td> 
+                       <td class="release-date-item__attributes--empt
+y"></td>
                </tr>
    </table>
[download]

See Mojo::DOM::CSS for the selectors supported by Mojo::DOM; these are based on CSS selectors, which you can learn more about at various places on the Internet, for example https://www.w3schools.com/css/css_selectors.asp (though Mojo only supports a subset). Unfortunately, checking the text content of elements isn't something they can do, but you can still use the other methods in Mojo::DOM and Mojo::Collection to get what you want. So just for example, given your example input, the following code prints "11 December 2020".

$dom->find('.release-date-item')
    ->grep(sub { $_->at('.release-date-item__country-name')
        ->all_text =~ /^\s*USA\s*$/ })
    ->each(sub { print $_->at('.release-date-item__date')
        ->all_text, "\n" });
[download]

Update: To clarify: It's ok that I'm using a regular expression here because I'm matching against the return value of ->all_text, which is just getting the plain-text content of the tags; I'm not trying to parse the tags themselves with the regex - Mojo::DOM has done that for us.