I solve it!
First off all, you should add these:
defaultConfig {
multiDexEnabled true
}
dependencies {
implementation 'com.android.support:multidex:1.0.3'
}
After, you should click Build in top bar of Android Studio:
Build > Build Bundle(s) / APK(s) > Build APK(s)
Finally, you have an app-debug.apk file in:
app > build > outputs > apk > debug > app-debug.apk
Note: apk, debug, app-debug.apk files created automatically in outputs file by Android Studio.