There are two ways to rename the 2D view in Inspect.

First:

1. Go to the 2D view folder
2. Long press on the file/view which you want to rename and choose 'rename'

Second:

1. Go to the 2D view
2. Click on 2D view - It will open the 2D view in edit mode where you can also add annotations
3. Click on the pen icon beside the name on the top bar
4. Rename and click submit to change the view name