Hi @harikrishnan-1infogmail-com
There are a lot of places you can add the form. If you are not familiar with WordPress template structure, kindly check this page first: https://developer.wordpress.org/themes/basics/template-hierarchy/.
If you are using WooCommerce, kindly check this page too: https://docs.woocommerce.com/document/template-structure/.
To show the custom field value on the front end, please check our tutorial here: https://www.advancedcustomfields.com/resources/displaying-custom-field-values-in-your-theme/.
If you don’t have the time to learn more about WordPress, I suggest you hire a developer to help you out with it.
I hope this makes sense 🙂
