i mostly intraday scalp.. works for me.

depends on currency pair..normally 2-3 pips.

if you use trading platform like MT4/5, it's even much easier to scalp. It will tell you the minimum profit (in points) you can take per transaction (Take Profit). just follow it. Once filled, just open another transaction of same pair.

tips for scalping is to keep the Take Profit level low, but open up as many transactions as possible. traders call it layers. cumulatively, it will be big at the end of day.

if you have total confident of market trending, then can increase the lot size.