It seems that exe to apk conversion is often searched by users that would like to use Windows programs (.exe) on Android devices in form of .apk app packages, this is unfortunately not possible. You have to search for Android version of your Windows program - if it exists.
Some websites claim to offer exe to apk converter, but such thing is extremely unlikely. You should be always extra careful when using such services as they might very well include malware, ransomware, spyware or other malicious code.
Open EXE file Open APK file