Will this improve my minecraft performance?

I'm thinking of starting a youtube channel but my minecraft is laggy. My laptop specs are Celeron Dual Core processor,4 RAM(memory,320gb Hard Drive and Integrated Intel graphics. If I changed 4gbRAM to 8gbRam would it run at atleast 20-30fps?

No, you probably won't see any performance boost, Minecraft only needs about 2-3GB of RAM to run good, you can change it to that (In the minecraft launcher) aslong as you just have minecraft and your recording software open.