If I have a low credit score, will I be denied as a ROVER pet sitter?

More than likely you will be approved if you meet other criteria other than credit score, check out the article about the background check https://support.rover.com/hc/en-us/ar...

Only Rover can answer that question and I believe it truly depends on what services you are applying for. Conceivably, they could turn you down if you were planning on performing services which require you entering a customer's home. While I'm not saying that you would do this, but a low credit rating could indicate someone in financial trouble and that person might be tempted by things in a customer's home. But that is how a company could view things.