It appears that I have been paid only part of my pet-sitting fee. Rover still owes me money. Status states it's pending. What does that mean and when will I get the remaining amount of money I earned?

If it says "pending", it means the stay is not over yet. You get paid 2 days after the stay is completed. Then the status will change from Pending to Redeemable.

What percentage of the stay have you been paid? Remember that Rover keeps a chunk of what you charge, typically 20% depending on when you started and whether you use RoverGO (see https://support.rover.com/hc/en-us/ar... ). So if you charge $20 for house sitting and you have a 5-night stay, you will get paid $80 ($20 x 5 nights x .80) within 2 days of finishing the stay.
The "pending" amount represents how much you will be getting paid IF you complete all the upcoming stays you have booked.

Sorry but you won't get your answer here on this forum so call Rover @ [Edit: Rover’s contact options have changed. Visit the Rover Help Center at https://support.rover.com/ to find the phone number, help articles, or chat with the team]