You need to come up with a better title and description #2 (edited by mod)

when i try to open that folder , i receive this message

Is it formatted in a file system type that Kali should be able to see?

sorry , what do you mean?

i don’t have much expereince in linux so i need you to tell me what to do to fix that

Do you know how that USB drive (which I assume you are attempting to use on Kali for the first time) is formatted?
Did you use it on another computer before? Are there files on there you are attempting to transfer from another machine?

The suspicion might be that it is formatted to work with Windows, and only Windows for example.

it’s my friend’s , i just wanna fix that , how to do ?

Is there data on it that you would like to keep?
By the way, this would be a quick way to check the formatting on Windows:
plug it in, open File Explorer, right click on the drive, select “Properties”, and there it should show you

Any disk is formatted for the system that will be using it, FAT32 is cross platform, anything OS should see it and be able to mount it.

NTFS is a Windows format, and I believe Kali should be able to read it, but not write to it.

Linux typically uses Ext4 or BTRFS these days and Kali would see it.

Mac uses HFS+ on older systems and APFS on newer systems, which neither Linux or Windows can see.

So if it can’t ‘see’ the drive, it may be because it is not in a format that Kali Linux can understand. Does that help make sense?

It sounds like the device may have been corrupted, and then no OS would see it..

If that is the case, then this may help you recover it;

it’s not usb it’s my device

idc about the files inside , i just wanna fix it

it’s not usb drive , i can’t explain cuz of my english you know it’s my hardware like ssd for example

is it externally connected file storage media? would help if you told us a little bit more about what you are looking at.

If your not interested in data on the drive, you can re-format it using GParted from your Kali menu, if you want to use the drive with Kali choose Ext4 or BTRFS format.

Also, I don’t see why this should not work regardless of what storage media you got there. Fred’s suggestion to use gparted is right on top there.
Again, hard to say without some details how it got connected to the Kali machine, and what you are trying to do.