Before mac os catalina, we could press F12 and see the dashboard including the monthly calendar.
On mac os catalina, dashboard has been removed. Any tips on quickly viewing the current month's/year's calendar in catalina.
As Apple removed the Dashboard for Catalina, the quick-view, F12, is gone, too.
To quickly view the Calendar you can add it to the Notification Center. I've found that this method is just as quick as using the dashboard.
If you need to see more detailed info, there's several other widgets you can add to the Notification Center, also.
If you know how to use Shortcuts, you could create a keyboard combo that bring this up, too.
Personally, I use Fantastical 2 on my Mac. It allows me to put small calendar in the menu bar. You can see it in the upper right corner of this screenshot:
Drag the apple calendar app to the dock. This will create a shortcut to it there (i.e. next to finder/mail). If you click on the shortcut the calendar will open in whichever view was last used (day/week/month/year).
I feel your pain - I used the calendar in the dashboard a lot - and there's no sensible way of doing it with the in built functionality. I looked up Fantastical 2 - but I'm not prepared to pay 80 bucks for something that used to be free... So I found Quick View Calendar in the app store. It is free and tt adds this little icon to your menu bar - it does the trick!