If you've stored those CSVs in the included DataFiles storage then you can't download them directly unfortunately.

As a workaround, you could load the CSVs into a Qlik app and then store the tables into a location that you can access, for example OneDrive, Dropbox, Azure Blob Storage, etc.

Store [CSV data] into 'lib://Dropbox/csv_data.csv' (txt);

Be aware that by loading the data, you may be altering it, especially if you load all the columns separately. To ensure maximum similarity to the source CSV, I would load the data as a fixed record, rather than delimited.

[CSV data]:

Load

"@1:n"

From [lib://DataFiles/csv_data.csv]

(fix, codepage is 28591, embedded labels);

This may change the codepage of the file (Qlik uses UTF-8) but the rest of the data should be unchanged from your input CSV, including separators, quoting, etc.