Awesome! Thanks for the help. Much appreciated.
I’m new to code, so most of that has gone over my head 
. I’ll take some time reading over it to see what I can learn.
The client currently has this solution:
They have a button in the header of their website and 2 pages, one for submitting information and one for updating information.
The button checks if the logged in user has submitted information and directs them to each page depending on if their information is found in the database.
I was hoping to move it to one page as their are a few extra requirements that they need to include now, such as setting a number 0 in the database on the first submit only, and error messages etc. I thought it made sense to make it one page.