Nothing to worry about. Those are urates. Torts expel them from time to time. As long as they are creamy like toothpaste, then it means your tort is healthy and hydrated. Urates that are dry and gritty mean dehydration.
You can just soak your tortoise to help it stay hydrated. 30 minutes in warm water 1-2 times a week.Phew! I got worried... in all of my research I was never warned about this. Thank you! I just cleaned it all up and it looks creamy, but seems a bit gritty. It’s definitely not dry though. I will keep an eye on it and if it doesn’t get better I will try to find the fix.