I DONT HAVE MIGRATION ASSISTANT ON MY MBP
Transfering data from a 2012 MBPro to Mac Mini,
I dont see migration assistant on my 2012 MBP
MacBook Pro 15″, macOS 10.15
The Migration Assistant app should be located in the Utilities folder which is located within the Applications folder. You should also be able to initiate the transfer by booting the new Mac and having Setup Assistant locate your old Mac:
Set up your MacBook Pro - Apple Support
Either method should be fine.