These stock options mean that you can purchase up to 78 shares of CVS stock for $104.82 each, at any time within the allowed window (I'm guessing 10 years), as long as you are still a CVS employee when you 'exercise' the option.
Unfortunately right now, the market price of CVS is $93.84, so you should not exercise the stock options now because doing so would require you to pay $104.82 per share, which is obviously stupid. So E-Trade will probably show the current value of your options as $0 right now, but that doesn't mean they're completely worthless. Remember that they have a 10 year (or whatever) expiry date, so you would expect that at some time during the next 10 years, CVS stock will rise above $104.82. Let's say they rise to $150 in 2020. Then you can exercise the stock options and buy 78 shares for $104.82 each = $8,175.96. Now you can either keep the stock, or sell them on the same day for $150 each x 78 = $11,700 minus $8,175.96 that you just paid for them = $3,524.04 profit.
As for why they say they are worth $1,000, they probably use the Black-Scholes equation to value the options at $1,000 which takes into account the 10 year time period and the expected rise and volatility of the stock over that time period.