For this, we need to create a plugin to place the billing address section before the payment methods.

create below file at the located place and paste the below code it

Path: app/code/Magemonkeys/Babeforepayment/etc/frontend/di.xml

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">    
    <type name="MagentoCheckoutBlockCheckoutLayoutProcessor">
        <plugin name="move_billingaddress" type="MagemonkeysBabeforepaymentPluginBlockCheckoutLayoutProcessor"/>
    </type>
</config>

Create a plugin at the located place and paste the below code.

Path: app/code/Magemonkeys/Babeforepayment/Plugin/Block/Checkout/LayoutProcessor.php

<?php
namespace MagemonkeysBabeforepaymentPluginBlockCheckout;
 
use MagentoCheckoutBlockCheckoutLayoutProcessor as CheckoutLayoutProcessor;
 
class LayoutProcessor
{
    
    public function afterProcess(CheckoutLayoutProcessor $subject, array $jsLayout)
    {
        $paymentLayout = $jsLayout['components']['checkout']['children']['steps']['children']['billing-step']['children']['payment']['children'];
 
        if (isset($paymentLayout['afterMethods']['children']['billing-address-form'])) {

            $jsLayout['components']['checkout']['children']['steps']['children']['billing-step']['children']['payment']['children']['beforeMethods']['children']['billing-address-form'] = $paymentLayout['afterMethods']['children']['billing-address-form'];
 
            unset($jsLayout['components']['checkout']['children']['steps']['children']['billing-step']['children']['payment']['children']['afterMethods']['children']['billing-address-form']);

        }
 
        return $jsLayout;
    }
}

Clear the cache and check the output.