Showing Form Reference on top of user fillable form

Question:
How can you show a reference number on top of a user-fillable form, based on the click by user to access a particular form.

Product:
Wix Editor

What are you trying to achieve:
I will try to explain it as simply as I can.

So I have a web page showing some jobs openings. Each job ad looks like this:

Job Reference: CB123
Job Title: abc
Brief Description: xyz
An “Apply” button

When the user clicks on the “Apply” button, he/she lands on a form to apply for that particular job. I want to display the Job Reference (in this case CB123) on top of that form, pre-filled in a non-editable field. And when user submits that form, I also want to get that Job Reference in my dataset linked to that form, along with the fields filled by the user.

Is there some way of achieving that? Would really appreciate practical solutions from the community. Thank you!

What have you already tried:
Haven’t tried anything. Appreciate if someone can guide me on this or route me to a tutorial on YouTube or web.

Additional information:
I am not a coder so can’t do it in dev mode.