Magento 2 - Checkout Plugin Customization

To add a credit line to my store, I incorporated the plugin:
https://magecomp.com/magento-2-loan-credit.html

It works perfect, but there is something that it does not do and that is to show in the upper right corner the balance of the credit line to the logged in users,

I am looking for someone to add the balance in the corner such as in the attached image.

At checkout the credit line appears as "credit store", I also need to change that message for a specific one (in spanish):
Credit Line: $ 12,000 </br> Payment method: {payment-form}

The value of {payment-form} is an SQL query that I will indicate to you.

The way to work will be that I will give you a copy of the plugin, you will modify it and we will test it later in my environment.

My budget: USD100

thanks!
Richard