Hey @NotORiouS0994!
@ClockworkOcean is correct. You can not redistribute assets sold on the marketplace unless the assets are sold specifically by the Epic Games store for free and only if they are used for demo purposes only. This will also apply to public domain work.
Check out 2.2.a, 2.2.b, and 2.2.d of the agreement @ClockworkOcean listed.