Once you become an active customer (excluding trial users), there are no limitations on the number of files you can download using each tab. This means you have unrestricted access to download as many files as you need.
PS: View Mass File Download, Salesforce file download app on Salesforce AppExchange: https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3A00000EcsAOUAZ