Re: How often should information update on my adwords account screens?
Welcome to the AdWords community :-)
I found a piece of inofrmation in the help centre under "finding your first ads" that states-
"Remember, though, AdWords reporting isn't real-time. This means you may not see clicks and impressions you've received in the last three hours."
"As you’re looking at your AdWords account data, it’s important to consider how fresh your statistics are. Performance data isn’t available instantly, and some reports are only updated once a day. When gauging your account performance, it can be helpful to know that some recent account data may not be showing up yet."
Please see the link "data freshness" for more information about this. I hope this helps you :-)