These scripts require a userscript manager like Tampermonkey. Hotpocket Helper is tested with Tampermonkey and the only userscript manager we officially support but you can try others like Violentmonkey or Greasemonkey.
Note: Greasemonkey has not worked reliably with Hotpocket Helper. Violentmonkey appears to work with Hotpocket Helpers on Chrome browsers, but not Firefox.

Chrome & Chrome-like browsers: https://chrome.google.com/webstore/detail/tampermonkey/dhdgffkkebhmkfjojejmpbldmpobfkfo
Firefox: https://addons.mozilla.org/en-US/firefox/addon/tampermonkey/
Opera: https://addons.opera.com/en/extensions/details/tampermonkey-beta/

Once you've installed one of these managers, get the most recent version of HPH. If your browser wasn't listed above or if you need help figuring out parts of this process, just pm fission on Discord. OR google "tampermonkey [your browser]"