How long does speedrun attempts usually take to be reviewed? I have two times on Wolfenstein The New Order that's waiting to be reviewed for 18 days now..

Looks like the last time a moderator for that game was online was 16 days ago. Typically once 21 days have passed that's cause for concern. I'd reach out to the mods over social media, both to ask for your runs to be verified and whether they'd be fine with you being added as a mod for the game, and if you get no response, post in this thread:

https://www.speedrun.com/The_Site/thread/63nr7/342

@Rayvex I took a look and it appears there are also other runs in the queue. I approached one of the Super Mods on social media to make them aware of that situation. Please monitor the progress on your run verification and keep me updated if it doesn't.