It's a bit of a subjective statement, as what one person considers ordinary, another might find interesting.
Here are some examples of how you might use it:
* "The restaurant's menu was so very ordinary, just the same old burgers and fries."
* "His new car was so very ordinary, a basic sedan that looked just like all the others."
* "Her life seemed so very ordinary, a routine of work, sleep, and eat."
The phrase can also be used sarcastically, to emphasize the lack of excitement or uniqueness in something:
* "This is so very ordinary, I can't believe you spent all that money on it!"
Ultimately, the meaning of "so very ordinary" depends on the context and the speaker's intention.