Enquiry form before Add to Cart button

Not sure I understand. You want an enquiry form for each attribute? That doesn’t make much sense, so not sure I have the correct understanding.

You can add a form to your product pages if you’d like to with some customization. There are also a few plugins that add an enquiry form to a new tab on the product page.

Do you want this to be just like a normal form where customers submit info and it get’s emailed to you? Or do you need this information attached to the product / order?

If the later, you can use Product Addons: https://woocommerce.com/products/product-add-ons/.

If you just need a normal form there that the user can submit if they want to, then you should be able to use any form plugin with shortcodes.