Create a macro to to copy data from one sheet to another

Hello, I am a beginner on Excel Macros and found this forum.

Here is my question -

I have file A, which has data in certain columns. I wanted to know if there is a way to create a Macro to copy and paste the data in file A into file B (in specific columns). File B remains the same, there will be multiple versions of file A.

Since I will have to do it for a lot of files, I wanted to know if there is a way to create a macro for this function, where the data is automatically copied and pasted into file B. I am assuming that file A would need to be defined each time, but if any help can be given on this, it will be great.

Thanks!