Here is what Epic Documentation say about Standard License-
The Standard license type has the following price tiers: Personal and Professional.
The Personal tier may include a Reference Only version for Unreal Editor for Fortnite (UEFN) content. This version provides access to a UEFN asset through its Verse path.
Publishers must offer their products under the Personal tier and the Professional tier. They can set the same price for both tiers, or different prices for each tier.
Buyers must choose the appropriate price tier, based on their revenue in the last 12 months, as follows:
- Personal: For buyers who have not generated more than $100,000 USD in gross revenue from commercial activity in the last 12 months.
- Professional: For buyers who have generated more than $100,000 USD in gross revenue from commercial activity in the last 12 months.
Source- https://dev.epicgames.com/documentation/en-us/fab/licenses-and-pricing-in-fab