Go to the official or Mega Man Corrupted Discord server. Look for the link to the "Public Demo 5.0" (or the latest stable build). It will be a .zip or .exe file. Do not use file-sharing sites like Mediafire or "apkpure"—stick to the developer’s direct link.
I notice you're asking about a download for on Android. Megaman X Corrupted Download Android
This is the complete, ad-free version of the popular mobile action RPG. It features hundreds of playable characters and is available on the Google Play Store . Go to the official or Mega Man Corrupted Discord server
Have you successfully played MMX Corrupted on Android? Share your Winlator settings in the comments below (but no linking to unofficial APKs—they will be removed). Megaman X Corrupted Download Android
Let's be blunt about why there is no simple APK.