The maximum size of a container depends on the file system of the volume on which the container is created:

File systemMax container size
NTFSDynamic containers - as big as the host volume
Regular containers - as big as available free space on the host volume
exFAT
as big as the host volume
FAT324 Gb
FAT162 Gb


However, rather than creating one bigger container we usually recommend using multiple smaller containers. Here is why:

By using several containers instead of a single one you win in: 
- flexibility ( being able to copy containers, upload them to cloud storage, and back-up data faster and easier )
- security ( using multiple keys and passwords to protect multiple pieces of data instead of single-key access to all data )
reliability ( even if a part of data becomes corrupted and/or inaccessible you will still be able to access the rest )