A global regex in scalar (or void) context only matches once. Also, there is only a $DIGIT variable made for each set of capturing parentheses in your regex. What you want to use is:

@handles = $result =~ /\((.*?)\)/g;
print "Handles are: @handles\n";
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Jeff[japhy]Pinyan: Perl, regex, and perl hacker.
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;