In a since-deleted Instagram post, the artist was apparently asking international fans to download VPNs in order to make it look like they were listening to the track in the United States (as Billboard only charts track popularity based on American listeners).
The instructions were part of a guide titled, "How to get Yummy to #1" with an image that asked people to "Create a playlist with Yummy on repeat and stream it. Don’t mute it! Play at a low volume. Let it play while you sleep. If you are not from the US you can download a VNP app. Set the VPN to US and then create a Spotify account."
Of course, eagle-eyed fans caught the image before it was taken down. Take a look at the original post below.