My 2011 Buick enclave was cranking fine but the battery need to change so we change the battery and now it turns over but it will not crank what is the problem

If it's cranking and not starting then the battery is doing its job. At this point you will need to start by looking over fuses. If nothing is blown you need to start with basics like fuel pressure and spark. Also try locking and unlocking the doors in case there is an anti-thief issue at play. Alex