Only download from reputable repositories like the Google Play Store , or trusted third-party mirrors such as APKMirror or Uptodown.
The search results do not identify a specific, widely-known application tied to the exact version string "APK v1.98.20." In academic and technical contexts, "98.20%" is cited as a for a malware detection system called MOBDroid2, which analyzes Android application packages (APKs).
Below is an informative guide on how to safely handle APK downloads and what the versioning likely represents. Understanding APK Versions