Tried everything I could see online but bootable usb not showing on startup disc

Not sure if the system report below will help but I have been trying to create a bootable USB, checked it's set up as GUID Partition Table and extended journaled HFS+ and have set to medium security with external devices allowed on utility settings for booting. Out of ideas! can anyone think of anything else?

UDisk      :

 Product ID: 0x1234

 Vendor ID: 0x048d (Integrated Technology Express, Inc.)

 Version: 1.00

 Serial Number: Љ

 Speed: Up to 480 Mb/s

 Manufacturer: General 

 Location ID: 0x14200000 / 1

 Current Available (mA): 500

 Current Required (mA): 100

 Extra Operating Current (mA): 0

 Media:

UDisk:

 Capacity: 31.46 GB (31,457,280,000 bytes)

 Removable Media: Yes

 BSD Name: disk2

 Logical Unit: 0

 Partition Map Type: GPT (GUID Partition Table)

 SMART status: Verified

 USB Interface: 0

 Volumes:

EFI:

 Capacity: 209.7 MB (209,715,200 bytes)

 File System: MS-DOS FAT32

 BSD Name: disk2s1

 Content: EFI

 Volume UUID: 0E239BC6-F960-3107-89CF-1C97F78BB46B

Install macOS Catalina:

 Capacity: 31.11 GB (31,113,306,112 bytes)

 Free: 22.71 GB (22,712,426,496 bytes)

 Writable: Yes

 File System: Journaled HFS+

 BSD Name: disk2s2

 Mount Point: /Volumes/Install macOS Catalina

 Content: Apple_HFS

 Volume UUID: 7B0F66EB-E635-3890-8137-3DEAFDEDED45