@Ana_Patricia There is Get Exe activity is available.
https://cloud.uipath.com/persobyteufj/marketplace_/listings/getexe
Also If You want to understand the code from .nupkg, there is way to extract it.
- Rename the extension .nupkg to .zip
- Extract zip file,
- You will get the DLL files which you can decompiled with the help of .Net Reflector