It's honestly whatever you want it to be. When I was starting from scratch from getting hacked, I would buy at 15 and sell at 30 because I needed to make nps fast, but as I accumulated a portfolio, I increased to 45 and then 60.
Most people wait until it reaches 60 because that's a nice profit, but as long as you buy stocks at 15 and sell them at a profit, you are good.