Thanks a lot André Lemos. This helped me to build my kotlin mobile app.

// settings.gradle.kt
...
maven {
    url = uri("https://repo.itextsupport.com/android")
}
...

// build.gradle.kt (Module:app)
...
val itextVersion = "7.2.5" // Or the latest version you find

    implementation("com.itextpdf.android:kernel-android:$itextVersion")
    implementation("com.itextpdf.android:forms-android:$itextVersion")
    implementation("com.itextpdf.android:io-android:$itextVersion")
...