From the Chase Ultimate Rewards portal website:
https://www.chase.com/personal/credit-cards/ultimate-rewards
You see "Available Now" and "Earning on Next Statement." Any points under "Available Now" have posted. I never leave any points that are "Available Now" on the CF; as soon as points post, they're moved to my CSR. "Earning on Next Statement" lists points that have been earned in your current statement period and are pending until that statement closes, at which point the points become "Available Now."
Click the "three lines" menu in the upper left, select "Rewards Activity." Scroll down to "5% Cash Back Categories." There should be a breakdown of how much cash back you've earned for the quarter. Divide the "Total Cash Back Rewards" amount by 0.05 (5%) to figure out how much of the $1,500 limit on 5x you've spent.
Are you checking for this transaction on your account on the Chase for Business website, or the Chase Ultimate Rewards portal website? Transactions on Chase business cards tend to show as a pending transaction for a while, then disappear for about a day, before finally posting in the current statement. The Chase for Business account website is not a good place to check for points.
Log into the Chase Ultimate Rewards portal website:
https://www.chase.com/personal/credit-cards/ultimate-rewards with your business account credentials, under "Earning on Next Statement" click "Review more activity," and you should see transactions show up there in about a day, with the points earned on each transaction. You can click on + for a breakdown of your bonus earned, but the points earned from Office Depot on the CIC should be a 5x multiple of the amount paid.