In order to get the list of file names inside a zip file you can use a python library “zipfile”. As python integration is possible in UiPath using Python Scope you can try this method.
from zipfile import ZipFile
with ZipFile('file.zip', 'r') as zip:
for info in zip.infolist():
print(info.filename)
The code above gives the list of file names inside the “file.zip” zip file.
For detailed info refer this article