You generally need to prove your identity and meet specific criteria (notability, uniqueness, and completeness of profile).
This is Android’s built-in "verified" system. Even for sideloaded APKs, Google Play Protect apkefor verified
Downloading APKs from unknown sources that claim to be “verified” is a common vector for malware, adware, or spyware. Understanding APKek and APK Downloads The Guide: You