Do you know how to code? Are you fluent in jscript and have you looked at the GraphQL tutorials or integration points? What is your experience?
Can you explain more about your integration? What exactly are you wanting it to do. What does the integration do?
I can sell you a license for it but online support would cost depending on the project. License cost through me is $149.00 USD that is for license only no support.
You can find very good tutorials for v5 that cover a lot of integrations.