Sorry, I might need you to elaborate on what you mean by on the grades you give. Do you mean projects, assessments, or individual bubbles? My understanding is that code’s platform does not have a common grading format, or place for you to put grades in because of the variation of how people are graded across the US.
However, an alternative is to use Google Classroom. I’m pretty sure that you can load all the lessons in as blank assignments for Google Classroom, then just keep your grades there as you assess student work. You can even assign the individual lessons using the “Send to Students” button:
For the assessments levels (at the end of the unit), there is a tab that lets you see all the information, and even download it as a CSV: