Message.vue

<template>
    <p>{{ message }}</p>
    <p>{{ count }}</p>
</template>

<script>
    import { ref } from "vue";
    export default {
        name: "Message",
        setup() {
            const message = "Hola!";
            const count = ref(0);
            return { message, count };
        }
    }
</script>