350
xkcd 2861: X Value
(imgs.xkcd.com)
Alt text:
The value of n is still unknown, but new results constrain it to fall between 8 and 10^500, ruling out popular 'n=1' and 'n=2' theories.
The best you'll get is evaluations of how much the company might be able to sell for or could open at on the stock market but that's based on thin air and many companies enter the market being evaluated at X$ only to crash in the next few days to their real value (see Robinhood).