If you reload the vue-cli, the input will be reflected in all the forms.

@@-11,7+11,7@@
          <v-card card_id max-width="344" class="mx-auto">
            <v-card-title>{{todo.name}}</v-card-title>
            <v-card-text>
+             <Field of >
            </v-card-text>
            <v-card-actions>
              <v-btn@click="increment(todo)" color="primary">Number of skips</v-btn>
              <span>{{todo.count}}</span>
              <v-btn@click="decrement(todo)" color="error"> Wrong (-)</v-btn>
              <v-btn@click="deleteItem(index)">Delete</v-btn>
            </v-card-actions>
          </v-card>
        </div>
      </v-container>
    </v-content>
  </v-app>
</template>

<script>
+ import Field from "./Field";

export default {
  data(){
    US>return{
      count —0,
      name: '' ,
      todos: [ ]
    };
  },
+  components: {
+    field
+  },
  mounted() {
    This.todos=JSON.parse(localStorage.getItem("todos")")||[];
  },
  methods: {
    addTo(){

<template>
  <v-text-field label="note" v-model="memo">/v-text-field>
</template>

<script>
export default {
  data(){
    US>return{
      US>"memo:"
    };
  },
  mounted() {
    if(localStorage.memo)this.memo=localStorage.memo;
  },
  watch: {
    memo(newMemo){
      localStorage.memo = newMemo;
    }
  }
};
</script>