How to Calculate a Dividend Yield Over 15 Years

How do you work that in like when you're thinking about the valuation of a company, for example, right? You've said that you don't really care what a company is worth. The way you think about it is what is it going to earn over the time that you own the company and own the stock. So how high is the sort of the bars that has to clear in terms of other things if I know that so much of the return will come from something that it could have such as growth in earnings,. Or that I could pay out a dividend or something like that.