Click here to find information on the ratings system.
To answer your questions, two "BUY" ratings is the highest ratings possible. Two "SELL" ratings in the lowest. Anything in between is a hold. A hold means to do nothing, whereas a buy means buy the stock and a sell means to sell the stock.
As for KMP, the target price is below the current price. This means hold the stock. Don't do anything. When the target is substantially below the current price, then the stock is wildly overvalued. In that case, it would be wise to sell. The opposite is also true. Investment research is not an exact science. Thousands of inputs go into every single analysis, so to predict an exact investment's price is impossible. When prices are wildly different their target price, they have a strong tendency to revert back to the target. It is like having a rubber band tied to the target price. Over time, prices also revert back to the target.
Stocks can meet short term price targets in one second or over the course of years. Again, with thousands of inputs for each analysis, a target price is impossible to predict. Additionally, news changes every second of the day. If positive or negative news comes out for an investment, the price will change rapidly and usually in the direction of the target price.
How often do you need to check WikiWealth? Once a day is enough. If the stock prices change rapidly or if news comes out about the stock or industry, more often is probably best. We do value investing, so don't expect crazy changes in the target price.