what does that Button do!?

[Uder]

I have a Spreadsheet for an old employer that doesn't work with me anymore.

It has an button, that execute some jobs of automation of my office.

the question is, how do I see the code of this Button?

It name is Text box 2, and it is a Form. A tried alt+f11 and this is the unique code that I found:

Sub refresh_data()
    ActiveWorkbook.RefreshAll
    Sheets("main").Select
End Sub