This is my first time using Ektron and i'm trying to implement Json-LD schema scripts for each page. I have 68 scripts that I need to implement that are unique for each page.
I thought I would be able to implement these scripts through meta data, but now i'm unsure. Each script is over 1000 characters, the html and meta tag types only allow 500 characters, so i'm assuming i'm in the wrong place. If anyone could shed some light it would be much appreciated.
Ektron's metadata isn't intended for large chunks of data / content. So, yes, you will find limits there.
Here are two things you might try as workarounds.
Most direct:
Use the Ektron Library. Go to the Library tab and click on the Root node and view Properties. Add an extension to allow you to upload your JSON-LD as a file. Use metadata on the content item to reference the uploaded file. Combine the two upon output.
If you want the JSON-LD to be editable within the CMS...
Gaming the platform a bit
Create a new SmartForm definition and include in it a single plain-text, multi-line field (not Rich text). This should hold your JSON-LD. Set up a folder and, if your version supports it (you didn't specify CMS version, so I will assume relatively recent), set the folder to be non-searchable so these things don't come up in site search results. Add a restriction to the folder to only allow the Smart Form definition you just created. Create your JSON-LD there using the plain-text field. You should be able to store up to 1MB.
Same as above, add your JSON-LD as text then use a reference to this item from the content you want to use it.
The metadata in this case (and possibly the library one, though I'd have to test and I don't have an Ektron environment for development anymore) will give you the Content ID for the object holding your JSON-LD. You'll have to make another API call but will give you the solution you appear to want from above.