I am starting in VUE 3 and I have the following problem

<script setup>
 import { RouterLink } from 'vue-router'  
 import { storeToRefs } from 'pinia'  
 import { useOfertaStore } from '../stores/ofertas'
 const { ofertas } = storeToRefs(useOfertaStore())
 const { fetchOfertas } = useOfertaStore()`enter code here`
 fetchOfertas()
  const cantidadOfertas=ofertas.lenght
  </script>
 <template>
  <!-- //Muestra la cantidad de Registros -->
 {{ofertas.length}}
 <hr>
 <!-- No No muestra nada -->
 {{ cantidadOfertas }}

</template>    

How can I calculate the number of offers arrays in the Script Setup?