www.wysiwygwebbuilder.com

I want to be able to put up a photo gallery. I want my customers to be able to select from a list of different options for what they want to see. I have a bridal website. So for example, if a customer would like to view all of my dresses that are fitted, lace, strapless. But another customer would like to see dresses that are a line, strapless and satin. As in vis-à-vis categories of the checkmark and in the photo gallery would adapt to their choices. How would I accomplish that?

With the built-in gallery you can add a filter, but only one category can be active at a time.
If you need a more advanced gallery then you will need to use a custom (third party) gallery.
Any script that works elsewhere will also work in WWB. You can add custom scripts via the HTML object.

Are you able to suggest a good third-party photo gallery?

Maybe you could create a card for each image and use this:
https://www.wysiwygwebbuilder.com/commu ... hp?t=98477

Haven't you already asked this within your previous post about icons not appearing on published website..
https://www.wysiwygwebbuilder.com/commu ... 65#p508165

Note having 500 images on one page on will cause issues with loading even.if you have a fast Internet download speed which would probably result in the user to leave before they all load.