The absolute best, guaranteed way to watch the English dub is to buy a physical copy. Specifically, you need to look for the in Region 1 (North America) . This specific release is the holy grail because it uniquely contains both the exclusive English dubbed version and the original Chinese version on a single disc .
They hired high-profile American voice actors to give the film a polished, punchy, and highly comedic westernized script.
If the file size is under 700MB, it’s a bootleg VHS rip from 2003. The audio will sound like it’s being played inside a tin can. Look for files 2GB to 8GB for a decent 1080p experience.
If you want the absolute , your target should be a 1080p MKV Dual-Audio BluRay Rip of the Uncut Hong Kong Version . This guarantees you don't miss a single minute of the hilarious training sequences, preserves the original musical score, and gives you the flexibility to swap between the English dub and the legendary original Cantonese audio whenever you want.