Thank you but which of the three choices do I pick for 15 platinum?

You should download Vegas Movie Studio 15 Platinum, not any of the other options, from the link Marco. gave you. Be sure to install the correct language version.

Platinum isn't an option, only 15, 15edit and 15 suite

Scroll down the page, please.

You seem to look at the Vegas Pro choices but you ask for Movie Studio. So see the Movie Studio choices (there will be no "Edit" option).

WOW I'm an idiot. Thanks guys for working with the mentally disabled today

Last thing, it's not giving me a download option only new purchase, upgrade or free trial. I have a physical copy with ssn. What do I do? Sorry so helpless

@ryan-k you're welcome. No need to be mad at yourself. You just were in a bit of a hurry to get started with your new software 😎. (Note that you can still edit your comment above to more correctly describe yourself)

edit: just saw the above. Are you actually on the correct page? https://www.vegascreativesoftware.com/us/downloads/

"Last thing, it's not giving me a download option only new purchase, upgrade or free trial."

Are you sure? The site I linked above contains downloads only. What you'll get then is a download manager which will download and install the software. And once installed you just need to enter your serial.

Yes. When I clicked it through my phone it took me to a link that had "download" but on the laptop it's a purchase menu with upgrade and free trial as the options

Try again: https://www.vegascreativesoftware.com/us/downloads/