If you're trying to find the Spectrum app in the Amazon Appstore, you might be out of luck. The app doesn't seem to be available for download in the store.
There could be a few reasons why the Spectrum app isn't available in the Amazon Appstore. It's possible that it's not compatible with Amazon devices, or that it hasn't been approved for distribution in the store. It's also possible that Spectrum simply hasn't made the app available in the store yet.
If you're looking for a way to watch Spectrum TV on your Amazon device, you might want to try using a different method, like downloading the app directly from Spectrum's website or streaming content from Spectrum TV through another service like Sling TV.