My hdd won't mount - how can I tell how much data is on it & how might I get it to mount?

Code:$ sudo mount -o rw /dev/sdb /mnt
mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error.

xx@xx:~$ sudo dmesg | tail
[802] usb 2-1: SerialNumber: XXXXXXXXXX
[802] scsi host3: uas
[802] scsi 3:0:0:0: Direct-Access SABRENT 0109 PQ: 0 ANSI: 6
[802] scsi 3:0:0:0: Attached scsi generic sg1 type 0
[802] sd 3:0:0:0: [sdb] 11721045168 512-byte logical blocks: (6.00 TB/5.46 TiB)
[802] sd 3:0:0:0: [sdb] Write Protect is off
[802] sd 3:0:0:0: [sdb] Mode Sense: 67 00 10 08
[802] sd 3:0:0:0: [sdb] Write cache: enabled, read cache: enabled, supports DPO and FUA
[802] sd 3:0:0:0: [sdb] Optimal transfer size 33553920 bytes
[802] sd 3:0:0:0: [sdb] Attached SCSI disk

xx@xx:~$ sudo fdisk -l
Disk /dev/loop0: 29.9 MiB, 31334400 bytes, 61200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/loop1: 54.98 MiB, 57626624 bytes, 112552 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/loop2: 255.58 MiB, 267980800 bytes, 523400 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/loop3: 62.9 MiB, 65105920 bytes, 127160 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/loop4: 49.8 MiB, 52203520 bytes, 101960 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk /dev/nvme0n1: 465.78 GiB, 500107862016 bytes, 976773168 sectors
Disk model: WDS500G3X0C-00SJG0
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 1FA5A9AA-1B33-400E-8176-5712AF85ED60

Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 1050623 1048576 512M EFI System
/dev/nvme0n1p2 1050624 976771071 975720448 465.3G Linux filesystem

Disk /dev/sdb: 5.47 TiB, 6001175126016 bytes, 11721045168 sectors
Disk model:
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 4096 bytes / 33553920 bytes

xx@xx:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 29.9M 1 loop /snap/snapd/8542
loop1 7:1 0 55M 1 loop /snap/core18/1880
loop2 7:2 0 255.6M 1 loop /snap/gnome-3-34-1804/36
loop3 7:3 0 62.1M 1 loop /snap/gtk-common-themes/1506
loop4 7:4 0 49.8M 1 loop /snap/snap-store/467
sdb 8:16 0 5.5T 0 disk
nvme0n1 259:0 0 465.8G 0 disk
nvme0n1p1 259:1 0 512M 0 part /boot/efi
nvme0n1p2 259:2 0 465.3G 0 part /

xx@xx:~$ blkid
/dev/nvme0n1p2: UUID="3c04d62b-2f1b-4514-bc63-94903fe82213" TYPE="ext4" PARTUUID="7a719eee-9f95-4693-8750-edac6411cdbf"

xx@xx:~$ sudo mount -o rw /dev/sdb1 /mnt
mount: /mnt: special device /dev/sdb1 does not exist.The hdd may have a lot of data on it or it might not have any data on it which might explain why there is no partition on it. The hdd is relatively new (less 1 year) and if it has been used, it has been very rarely used other than to have added data to it.