You mixed up with plugin version and distributionUrl. Plugin version should be classpath 'com.android.tools.build:gradle:3.0.1' or com.android.tools.build:gradle:3.1.0. Read Android Plugin for Gradle Release Notes.
buildscript {
repositories {
jcenter()
google()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.1'
}
}
And distributionUrl to GradleWrapper.
distributionUrl = https\://services.gradle.org/distributions/gradle-4.4-all.zip
Currently latest Version 3 gradle plugin available on android for which you have to use classpath 'com.android.tools.build:gradle:3.1.0'.
To be up to date see Configure Your Build.