MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports key board B letter is not working
MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports key board B letter is not working or working after several touch
MacBook Air 13", macOS 10.13
MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports key board B letter is not working or working after several touch
MacBook Air 13", macOS 10.13
Visit an Apple Store (when they reopen) or Authorized Apple Service Center. Let them assess the Mac and advise you how to proceed.
See this:
Keyboard Service Program for MacBook, MacBook Air, and MacBook Pro - Apple Support
If yours is affected, there is not charge for the repair.
How can I get changed keyboard or repair through authrised service
MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports key board B letter is not working