Hey @Gerry W.4, thanks for posting your question to the Dropbox Community.
You should definitely be able to delete more than 100 files at a time, the deletion limit is bigger than that (it's not really a fixed number), however, that's just for the website.
If you have the Dropbox desktop app installed, you can delete the files from your local Dropbox folder and no limitation applies there.
Let me know how it goes.