This release is compatible with the google play 64-bit requirements / 64 bit support

 Build.gradle

Step 1 - import below the line

import com.android.build.OutputFile

Step 2 - add ndk Tag insie defaultConfig tag

defaultConfig {
      ------
    ndk {

            // config you want to support device

            abiFilters 'arm64-v8a', 'armeabi', 'armeabi-v7a', 'x86' , 'x86_64'

        }
}

Step 3 - add splits tag inside Android tag

android {

splits {

// Configures multiple APKs based on ABI.

        abi {

// Enables building multiple APKs per ABI.

            enable true

// By default all ABIs are included, so use reset() and include to specify that we only

// want APKs for x86, armeabi-v7a, and mips.

            reset()

// Specifies a list of ABIs that Gradle should create APKs for.

            include "x86", "x86_64", "armeabi-v7a", "arm64-v8a"

// Specifies that we want to also generate a universal APK that includes all ABIs.

            universalApk true

        }

    }

// Map for the version code that gives each ABI a value.

    def abiCodes = ['x86': 1, 'x86_64': 2, 'armeabi-v7a': 3, 'arm64-v8a': 4]

// APKs for the same app that all have the same version information.

    android.applicationVariants.all { variant ->

// Assigns a different version code for each output APK.

        variant.outputs.each {

            output ->

                def abiName = output.getFilter(OutputFile.ABI)

                output.versionCodeOverride = abiCodes.get(abiName, 0) * 100000 + variant.versionCode

        }

    }

}

Step 4 - there are generate multiple apk, 
Upload apk : app-universal-release.apk