Cranks no start after timing chain repaired

We need to start with checking for codes to see if there is anything pointing to what this could be.

Also, when you say it won't start, does the engine crank and not start or does nothing happen when you turn the key?

Lastly, how long ago was the timing chain replaced?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing