An arbitrary number of pips or ticks wont help you.
Your stop distance and location depends on a few things: which market, the time frame, the current volatility, how good your entry point is and if going short you also need to account for the spread.
The basic idea is:
Put your stop in a location where if it is hit your idea was clearly wrong!!
Eg: Mkt is in a bull trend = Put your stop below the previous major low (on your timeframe) so that it will only be hit if the trend breaks.
I know this can seem a bit vague but it will hopefully help you understand what you trying to aim for.