>> Is there a way to view the unreviewed queue for a given category? <<
Nope.
>> Also, how long does it take (on average) to get a site reviewed <<
Anything from 5 minutes to quite-a-large-number-of-months. It all depends on a whole host of factors, but category unreviewed queues are a bit like stocks and shares "past performance is not an indication of future results... queues may go up and down".
The best thing to do, is to follow the
advice available on the ODP, ensure your site complies with our
guidelines, and submit your site to the MOST APPROPRIATE category (if your site is about 'bourbon biscuits', submit to 'Food/Snacks/Biscuits/Bourbon' and NOT to 'Food/Snacks' or 'Food/Snacks/Biscuits') - ideally with a good, honest
description, the correct
non-cloaked URL and then just wait.
If your site then hasn't been listed after a month or two, then please feel free to post in the 'Site Submission Status' forum with your site's URL in the 'Subject header' and a clickable category path to the category you submitted to (just cut'n'paste the URL bar so you get
http://dmoz.org/Regional/Europe/United_Kingdom etc ).
Do NOT:
* Submit your site to lots of categories
* Submit your site to categories "just because they have a listed editor"
* Ask for a submission status within a month of submitting (it just wastes time)
* Submit mirrors, doorways, or 'hidden URLs' to your site.
Hope it helps!
beebs.