If you specifically want the English dub, use Crunchyroll or rent from a digital store. Bilibili is great for subs, but not for this film's dub.

Hi there,

Here’s a helpful response for someone searching for the English dub of I Want to Eat Your Pancreas on Bilibili: Watching the I Want to Eat Your Pancreas English Dub on Bilibili – What You Need to Know

Hope this saves you time searching! Let me know if you need help finding the subbed version on Bilibili instead.

I Want To Eat Your | Pancreas English Dub Bilibili