Hello,
No, the menu bar font size is fixed. The only way to make it larger is to "lower" the resolution of your entire display, which will make everything bigger.
> System Preferences... > Displays > Resolution: Scaled
Choose a "smaller" set of numbers, and the items on entire screen will be larger. However, they may be slightly blurrier, as it will no longer be running at the native default resolution of the display panel.
Hope that helps.
C