Can I restore a .bmp file of full database backup to an Oracle 12c EE instance running on RDS?
After exchanging several comments I came to know that you have Data Pump file of full database. Anyway you can use the SQL Developer to import export database objects. Just follow the steps:

1) Launch the SQL Developer and go to View menu and click on DBA.

 

2) Then add database connection to perform Data Pump operations.



3) Click on Data Pump and select the appropriate job wizard.


4) Right click on Data Pump and Data Pump import wizard.



Useful link:
 Using DBA Features in SQL Develope