Hi Josephine,

You can easily display contacts related to account. Below is the reference code to that:

HTML file:

<!-- contactList.html -->
<template>
    <lightning-card title="Related Contacts">
        <lightning-datatable
            key-field="Id"
            data={contacts}
            columns={columns}
            hide-checkbox-column="true">
        </lightning-datatable>
    </lightning-card>
</template>

// contactList.js
import { LightningElement, wire, api } from 'lwc';
import getRelatedContacts from '@salesforce/apex/ContactController.getRelatedContacts';

export default class ContactList extends LightningElement {
    @api recordId; // Id of the current Account record

    columns = [
        { label: 'Name', fieldName: 'Name', type: 'text' },
        { label: 'Email', fieldName: 'Email', type: 'email' },
        // Add more columns as needed
    ];

    contacts = [];

    @wire(getRelatedContacts, { accountId: '$recordId' })
    wiredContacts({ error, data }) {
        if (data) {
            this.contacts = data;
        } 
    }
}

// ContactController.cls
public with sharing class ContactController {
    @AuraEnabled(cacheable=true)
    public static List<Contact> getRelatedContacts(Id accountId) {
        return [SELECT Id, Name, Email, ... FROM Contact WHERE AccountId = :accountId];
    }
}

I hope this will help you.

Thanks!