Personally I would say well above and very much above and none of the other options. However, let us take a look at Google Ngrams:
It seems like in the past "so much above" was more common, with "very much above" a distant second. More recently, both uses have decreased significantly, though "so much above" has made a slight comeback. The other three options ("very above," "very well above," and "so well above") are all but nonexistent.
But if we add "well above" to the search:
It blows all the other uses out of the water in contemporary usage. Although it is declining, it is still an order of magnitude more common than the other two possibilities.
Edit to respond to your bounty: "The helicopter is so much above us" is not something a native speaker would say. Instead: "The helicopter is [so/very] high [above us]."
The "above us" would not really be necessary unless the speaker was themselves very high above the ground and wanted to emphasize that the helicopter was even higher than that.