Hello Naveen
First you need to create the Package with your process, objects, Based on project requirement Queue,Credentials, Environmental Variables and give a name to package.
After package creation, Select the package there you will find New Release button on right--> give the name to release and save, it will create a .bprelease file for you
Go to other system, Click on File Menu (Which is on left top corner) / CTRL + I (Shortcut key) --> import --> give the .bprelease file path.
Thanks & Regards,
Vijay Rudrappa Dodamani