It really depends on a lot of factors like your natural steadiness, your ability to find a comfortable stance or being braced against something solid, etc. Assuming a realistic 4 stops of VR on a modern body (regardless of the rating it's generally less in realistic usage) I can usually get good pics at 1/30 or faster with the 24-120 f4. There may be a little bit of shake but not very much. That number can go up and down depending on things like wind, being on a steady/unsteady platform, etc. So I generally aim for 1/100 or faster and I've gone as low as 1/15 when braced against a tree or building. I'll usually do a burst as well and expect one to be sharper than the rest.
Another factor is if what you're aiming at is higher, lower, or same height as you as it changes the forces on your arms. And, of course, early in the day after a good sleep will be better than later in the day after a lot of activity or being hungry so expect that your minimum number will change through the day.