If the app itself won't open, you can sideload the final compatible version of the Store. Compatible Version : The Google Play Store version 20.2.09
is one of the last stable releases with a minimum requirement of Android 4.1. Fix Login Errors download google play store for android 412 fix
Go to Settings → Security → Unknown sources → Check ON . This lets you install APKs manually. If the app itself won't open, you can