This thread is about JupyterLab. You mention you are using Jupyter Notebook v7+ and your screenshot reflects this.
So the path to the ‘Settings Editor’ is different.
The menus are context dependent in all of Jupyter and Jupyter Notebook is document-centric and so the advanced options you get with JupyterLab aren’t offered in the notebook view context at this time. I have detailed one of the easiest ways to access the settings editor from the notebook view at the end of a StackOverflow answer about a suggestion on how to proceed to adjust the toolbar here.
I’ll quote the pertinent part here for convenience:
‘…in Jupyter Notebook 7+, at this time the easiest way to find the ‘Settings Editor’ when in the Notebook interface is to go to the File menu and select ‘
View’ > ‘File Browser’. Then on the ‘Fle Browser’ page you’ll see ‘Settings’ as a choice along the File menu. The ‘Settings’ menu context here is expanded and includes a choice of ‘Settings Editor’’. ’