Help - I’ve accidentally deleted the Macintosh volume instead of reformatting.

No, it should be formatted as APFS, unless you're installing an earlier version of MacOS in which case yes it should be Mac OS Extended (Journaled). What is your MacBook Pro model?

BazzaLewpy wrote:

Sorry to be a pain, but I don’t want to screw it up… When I erase APPLE HDD should I put Macintosh HD as the name in the drop down box?

Name: Macintosh HD

Format: Mac OS Extended (journaled)

Scheme: GUID Partition Map

is the above correct?

You encrypt the drive after the OS is installed by going to System Preferences.

BazzaLewpy wrote:

Thank you, I might just be in the right track now.

I used the following settings:

Name: Macintosh HD

Format: Mac OS Extended (journaled)

Scheme: GUID Partition Map

will my data still be encrypted when I’ve finished installing as it previously was or should I have used a different format?

... See reply below

Select the Erase button in Disk Utility. It should give you an option to create a new volume after it is erased.

APPLE HDD