1. My Chemical Romance Official Website: Visit their official website, and in the "Music" or "Merch" section, you might find the piano sheet music for Heaven Help Us available for purchase or download.
2. Online Music Retailers: Look for reputable online music retailers like Sheet Music Plus, MusicNotes, or Hal Leonard, which often sell digital downloads or physical copies of sheet music, including works by My Chemical Romance.
3. Print Music Stores: Check specialized print music stores in your area, as they may carry sheet music collections or individual pieces from My Chemical Romance, including Heaven Help Us.
4. My Chemical Romance Fan Sites: Some dedicated fan sites or forums might provide access to unofficial or fan-created piano arrangements of My Chemical Romance songs, including Heaven Help Us.
5. Band Member Social Media: Occasionally, band members or associates may share or link to piano arrangements or sheet music through their personal social media accounts or other platforms.
6. Online Music Library Subscriptions: Services like Scribd, Issuu, or Amazon Kindle Unlimited might offer digital access to sheet music collections or publications containing Heaven Help Us by My Chemical Romance.
Remember, always obtain sheet music legally, respecting the copyright of the creators and their works. Check the legitimacy and reliability of online sources to ensure you're accessing genuine sheet music.