8/3/2020 update
After update to AS 3.6.1 you should update your android gradle version to 3.6.1 > classpath 'com.android.tools.build:gradle:3.6.0'
Orignal solution
Android Studio 3.6 and above, From the Left menu, select Project > Gradle Scripts > gradle-wrapper.properties
then modify the distributionUrl and set it to https\://services.gradle.org/distributions/gradle-5.6.4-all.zip after that sync your project with Sync Project with Gradle Files, after it's finished go back to your build.gradle (Project) and update the dependencie of gradle classpath to classpath 'com.android.tools.build:gradle:3.6.0', almost done.
Now it's time to enable it, in your build.gradle(:app) set it
viewBinding {
enabled = true
}
12/16/2020 update
With classpath 'com.android.tools.build:gradle:4.1.1' viewBinding is deprecated, you have to use:
buildFeatures {
viewBinding = true
}