Catalina creates two volumes: your Mac HD which contains the OS/system and is read only. And, the Mc HD - Data volume which is read/write and your User folder, apps, etc.
I am not the best at this, but it looks like:
You appear to have two partitions: both are about 250 GB and APFS.
It looks like there is nothing on the first one listed except the needed EFI (the OS needs that).
The second one has:
your data volume (which is your user folder and apps, etc) takes up most of it. Right there, it looks like you need to do some deleting and/or moving space hogging files to an external drive because you are close to being full.
Mac OS needs the next two.
The 4th one is another volume to run Windows or some such in a VM environment - you must have created it.
The last one is your Mac HD which is read only and contains the OS/system.
Not sure why you have two partitions - one full up and the other one empty.
If you post back, please include vital info such as Mac model/year and OS version and particulars as to why you have two partitions, etc, etc. We are not good at guessing.