Step 1: Click on Gradebook from the top navigation bar.

Step 2: Displayed will be your course content and Gradebook. If you want to change to another course, select from the Change course drop-down. 

Step 3: Choose the location for your Gradebook export from the Export gradebook for drop-down and click Export.

Step 4: If you have selected Excel, click on Save to save this Excel file to your computer. Open to view the Gradebook in Excel. If you have selected Moodle, click on Save to save the zip file to your computer. The zip file contains csv files in the correct format for Moodle upload.