You are too vague and too incoherent for us to understand what you want.
To read data off a mass-produced board MCU (microcontroller unit), you'll first need to find out where are the programming pins of that MCU are. Check the datasheet and any relevant documents.
Next, trace where the respective pins lead, and make a connector suitable for the board connector. If there is no board connector (pretty likely, since mass-produced boards are contact-programmed), find a non-laquered spot on those traces, make a mirrored board of those spots, press it against the original board and make sure the mirrored traces overlap.
Next, connect the traces from your board to a suitable programmer for that MCU. Using your favourite programmer (or the suitable one) put it in read mode and pray that the code isn't protected. Which usually is, because no one likes outsiders peeking into their code. If it succeeds reading, you got yourself a nice little raw file. Using a decompiler (converts raw files to assembly instructions) if one exists for that architecture you can get a .asm.
From this point on, you need to be an assembly god in that MCU's hardware language if you want to understand what happens. Yep, no C, C++, basic or pascal will ever come out of a MCU.