Hi Amey, 🙂
In that case, note that you can change it in the section settings. Click on Customize and then, click on the blue pencil related to this section.
First, you need to choose to display 4 courses in Query tab.
Secondly, in the Layout tab, you can choose to show 4 courses in one row. Please find the attached screenshot.
Let me know if you need more explanations. 🙂