Are ODATA APIs included with S/4 HANA 2020 with ABAP & Fiori?

Yes, we do include ODATA APIs with S/4HANA 2020 with ABAP & Fiori

You also want to keep in mind that all of our SAP Access plans include a ten day return period. If our product doesn't fit your needs, you have ten days to request a full refund. SAP is very expansive, so we feel this is the best policy to make sure our customers are satisfied.