Macos

create user with admin privilages

dscl . -create /Users/abjorklund
dscl . -create /Users/abjorklund UserShell /bin/bash
dscl . -create /Users/abjorklund RealName "Andreas Bjorklund"
dscl . -create /Users/abjorklund UniqueID 1001
dscl . -create /Users/abjorklund PrimaryGroupID 1000
dscl . -create /Users/abjorklund NFSHomeDirectory /Users/abjorklund/
dscl . -passwd /Users/abjorklund password
dscl . -append /Groups/admin GroupMembership abjorklund

which version of macos are you running

sw_vers
ProductName:	Mac OS X
ProductVersion:	10.13.5
BuildVersion:	17F66a