Step 1: After build a form with full infomation of product and the end with a total price field ( a Hidden Field, Number Field or Calculated Fields) . You have to create a Submit button. Then choose Woocommerce add to cart in Action after submit.
Step 2: Add Product ID and Price Field Shortcode:
– You can add all field shortcode (infomation product) without Price Field Shortcode to Custom Order Item Meta.