This is against Discord TermsOfService and you can be banned for this. Use it at your own risk. I myself don't use it, but somehow got banned, just for having this repository probably.
Open DevTools by right clicking -> Inspect -> Now in the panel opened, Find "Application" (Must be somewhere at the top) -> Then click Those Device-Mobile icon, must be somewhere in the start of the line where you found "Application" -> Now find LocalStorage. Now double click It. Something more, something new must have appeared below it. There, double click discord.com. There must be many KEYS and VALUES visible now. Then in filter search box above those, type token and search. Copy token value. This is your self bot token. This is Dangerous to share until you trust the person . because they can use this to DO ANYTHING WITH YOU ACCOUNT! they can send messages, and (maybe) even login to Your account!
Enable Developer mode on discord. To do it, open your discord user settings. Now find "Behaviour" Here enable it. Now go to any server where you want to spam those money messages. I recommend your own server, or the other server will surely ban or mute you. Followingly,Discord might ban you too. Click on the channel where you want to send commands. To do it, right click it and click "Copy Id'. If you are on touchscreen, press and hold the channel.