Thanks for this, and sorry for late reply...
Here a tip I found out. There are 3 place to look for scrap, and you can sell it to Joe for some cash and skill point. What I did is basically...
Search scrap at alley --> Sell it to Joe --> Search scrap at Lucy store --> Sell it to Joe --> Search scrap at avenue --> Sell it to Joe.
Selling it like this instead of in one go gave you more skill point. Add the skill point you get from working at Lucy store, you could get 2-4 skill point per day. It depends on rng.