#! perl -w
use warnings;
use strict;
use XML::XSH2;

open "C:\\location\\test.xml" ;
for /httpsRoutes/httpsRoute
    echo @hostname (key) @tier | cat > out.txt
[download]

Errors I'm getting:

C:\Strawberry\perl\bin>perl "C:\location\xmlRead_3.pl
Array found where operator expected at C:\location\xmlRead_3.pl line 8
+, at end of line        (Missing operator before ?)
Array found where operator expected at C:\location\xmlRead_3.pl line 8
+, at end of line
        (Missing operator before ?)
Unknown regexp modifier "/h" at C:\location\xmlRead_3.pl line 7, at en
+d of line
Unknown regexp modifier "/t" at C:\location\xmlRead_3.pl line 7, at en
+d of line
Unknown regexp modifier "/t" at C:\location\xmlRead_3.pl line 7, at en
+d of line
Unknown regexp modifier "/R" at C:\location\xmlRead_3.pl line 7, at en
+d of line
Unknown regexp modifier "/t" at C:\location\xmlRead_3.pl line 7, at en
+d of line
Unknown regexp modifier "/e" at C:\location\xmlRead_3.pl line 7, at en
+d of line
syntax error at C:\location\xmlRead_3.pl line 7, near "for /httpsRoute
+s/httpsRoute"
Global symbol "@hostname" requires explicit package name at C:\locatio
+n\xmlRead_3.pl line 8.
Global symbol "@tier" requires explicit package name at C:\location\xm
+lRead_3.pl line 8.
Execution of C:\location\xmlRead_3.pl aborted due to compilation error
+s.
[download]

Have you read the documentation to XML::XSH2? Also, as you seem to be on MS Windows, you should use type instead of cat.

#!/usr/bin/perl
use XML::XSH2;
xsh << '__XSH__';
open 'C:\location\test.xml' ;
for /httpsRoutes/httpsRoute
    echo @hostname (key) @tier | type > out.txt
__XSH__
[download]

(untested)
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