Applying Flutters app_plugin_loader Gradle plugin imperatively using the apply script method which is deprecated, will be removed in a future release

Since Flutter 3.16, projects generated with flutter create use the Plugin DSL to apply Gradle plugins. Projects created with versions of Flutter prior to 3.16 need to be migrated manually.

To Follow The steps:

Step one :
Replace the contents of /android/settings.gradle with the below

Moving (Plugins) Section to new Below one Out of pluginManagement curly Brackets

plugins {
    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
    id "com.android.application" version "7.3.0" apply false
    id "org.jetbrains.kotlin.android" version "1.9.22" apply false // Newer Version
}

Add this Section to pluginManagement Below Line >>

includeBuild("${settings.ext.flutterSdkPath}/packages/flutter_tools/gradle")

repositories {
    google()
    mavenCentral()
    gradlePluginPortal()
}

Step Two:
Remove the whole buildscript block from <app-src/android/build.gradle:

buildscript {
    ext.kotlin_version = '1.7.10'
    repositories {
        google()
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:7.3.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

Step Three:
Remove this code if it’s found from <app-src/android/build.gradle:

-def flutterRoot = localProperties.getProperty('flutter.sdk')
-if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
-}

-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

Last Step : in the same file at first line add this code :

plugins {
    id "com.android.application"
    id "kotlin-android"
    id "dev.flutter.flutter-gradle-plugin"
}

Finally You can follow instructions From Flutter Docs:
Deprecated imperative apply of Flutter’s Gradle plugins