How I can get data from ssd MacBook Pro (15-inch, 2018) and transfer them to other Macbook?

If @Grant's suggestion for Target Disk Mode doesn't work, then you can ask Apple or an Apple Authorized Service Provider to attempt to recover the data for you. They have access to a special service only utility to try and access data from the integrated SSD, but the Logic Board must be at least partially functional like in Target Disk Mode (actually they put the laptop into a DFU like mode). An AASP may be more likely to assist in recovering the data than an Apple Store. If neither of these methods work, then you will need to contact a professional data recovery service such as Drive Savers or Ontrack.

In the future make sure to have frequent & regular backups. It is impossible to recover accidentally deleted data from an SSD. Plus an SSD can fail at any time without any warning signs. Plus with Apple laptops with integrated SSDs the problem is even worse since any hardware failure may prevent easy access to the SSD. Ideally users should have more than one backup.

kaz-k is correct.... I miss read the post as a 2015.

If you have a backup of your user data you can access your valuable data from a backup, independent of the soldered to the board SSD on your dead Mac.

Don't wait for a catastrophic failure to get the backup religion —

3-2-1 Backup Strategy: three copies of your data, two different methods, and one offsite.

Boot clone https://discussions.apple.com/docs/DOC-10081

How to use Time Machine to back up or restore your Mac: https://support.apple.com/en-us/HT201250

Use DiskUtility Restore feature  https://support.apple.com/guide/disk-utility/restore-a-disk-dskutl14062/mac

         note: >System Preferences>Security & Privacy >Privacy>Full Disk Access

                  unlock the  padlock,  press the + button and add Disk Utility 

It is possible Apple may have tools on the back bench to help you if you are desperate...

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"—

https://www.apple.com/retail/geniusbar/

Outside the USA

https://locate.apple.com/country

From iOS device using the app to make a online Genius Bar appointment is easy: 

https://itunes.apple.com/us/app/apple-support/id1130498044?mt=8

(note: due to the temporary closure of Apple Stores and the staggered reopening there may be some delays.

 ref: https://www.apple.com/shop/browse/store/temporary_closures )

 Mac notebook, contact us and we'll send you a box you can use to ship it to an Apple Repair Center. We'll return your repaired product to you as quickly as possible. Depending on where you get service, you might be able to check the status of your repair online. Start a service request https://support.apple.com/mac/repair/service

Call Customer Support  (800) MY–APPLE (800–692–7753) 

or on line  https://getsupport.apple.com/

or call  AppleCare Support at 1-800-APLCARE (800-275-2273)

If you old Mac is sort-of working maybe you can boot it into Target Disk Mode:

Transfer files between two Mac computers using target disk mode - Apple Support

Others in this predicament would use their trusted Time machine backup to get the files. If you do not have such a backup, you now understand why you need one.

leroydouglas has links just above.

.

Hi,

You can't access to 15inch 2018 MacBook Pro storage SSD since it is soldered on logic board.

So there is no way to access broken MacBook Pro SSD data.

If the drive is functioning...

You can remove the SSD and put it into an external enclosure

OWC Envoy Pro

Portable, Bus-Powered USB 3.0 Storage Enclosure for select Apple Flash SSDs from most 2013 to 2015 Mac Models

https://eshop.macsales.com/item/OWC/MAU3ENPRPCI/