Gradle script is implmented in demo project which is given below.

Steps for Creating Gradle Build Script

/**    * Auto Increment Build Version Script*/def versionPropsFile= file('version.properties')/*Setting default value for versionBuild which is the last incremented value stored in the file*/if (versionPropsFile.canRead()) {Properties versionProps=newProperties()        versionProps.load(newFileInputStream(versionPropsFile))def value=0try {def releaseBuildTask= getTasks().findByName('assemble').nameif ('assemble'in releaseBuildTask) {                value=1            }        }catch(Exception exception) {println"Unable to found Release build Running Tasks"        }//Getting Strings from version.propertiesdef versionMajor= versionProps['VERSION_MAJOR'].toInteger()def versionMinor= versionProps['VERSION_MINOR'].toInteger()def versionPatch= versionProps['VERSION_PATCH'].toInteger()+ valuedef versionBuild= versionProps['VERSION_BUILD'].toInteger()+1def versionNumber= versionProps['VERSION_NUMBER'].toInteger()+ value//Saving modified values in version.properties        versionProps['VERSION_PATCH']= versionPatch.toString()        versionProps['VERSION_BUILD']= versionBuild.toString()        versionProps['VERSION_NUMBER']= versionNumber.toString()        versionProps.store(versionPropsFile.newWriter(),null)        defaultConfig {            applicationId""            minSdkVersion16            targetSdkVersion29            versionCode versionNumber            versionName"${versionMajor}.${versionMinor}.${versionPatch}.${versionBuild}"            testInstrumentationRunner"androidx.test.runner.AndroidJUnitRunner"            multiDexEnabledtrue            archivesBaseName="${applicationId}_v${versionName}"        }    }else {thrownewFileNotFoundException("Could not find version.properties")    }