If you put your words on separate lines in the text file (as is usually the case in free dictionaries you can download off the Internet), you can do something like:
open my $file, '<', 'words.txt' or die "Can't open words: $!";
my @listOfWords = (<$file>);
As for your other error, if you used the exact code in your second block, you actually have round braces instead of the square subscript braces ($listOfWords($count) should be $listOfWords[$count]), and you are missing a closing brace: } at the end of the block. Either of those could cause other errors which might not be obvious if the @hangman error was the first one you saw. In addition to that:
$Word = split ' ', $line;
... will return the count of words found in $line, since $Word is a scalar variable which puts split into scalar context. You would instead write something like:
push @listOfWords, split(' ', $line);
(This gets rid of the need for the $count variable.)
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