To see if your Windows 10 computer is ready to support WPA3:

netsh wlan show wirelesscapabilities

returns:

Wireless System Capabilities
----------------------------
    Number of antennas connected to the 802.11 radio (value not available)
    Max number of channels the device can operate on, simultaneously (value not available)
    Co-existence Support                        : Unknown

Wireless Device Capabilities
----------------------------
Interface name: Wi-Fi 2
    WDI Version (Windows)                       : 0.1.1.9
    WDI Version (IHV)                           : 0.1.1.9
    Firmware Version                            : E2.41
    Station                                     : Supported
    Soft AP                                     : Not supported
    Network monitor mode                        : Not supported
    Wi-Fi Direct Device                         : Supported
    Wi-Fi Direct GO                             : Supported
    Wi-Fi Direct Client                         : Supported
    Protected Management Frames                 : Supported
    DOT11k neighbor report                      : Supported
    ANQP Service Information Discovery          : Supported
    Action Frame                                : Supported
    Diversity Antenna                           : Supported
    IBSS                                        : Not Supported
    Promiscuous Mode                            : Not Supported
    P2P Device Discovery                        : Supported
    P2P Service Name Discovery                  : Supported
    P2P Service Info Discovery                  : Not Supported
    P2P Background Discovery                    : Supported
    P2P GO on 5 GHz                             : Supported
    ASP 2.0 Service Name Discovery              : Not Supported
    ASP 2.0 Service Information Discovery       : Not Supported
    IP Docking Capable                          : Not Supported
    FIPS                                        : Supported
    Instant Connect                             : Supported
    Dx Standby NLO                              : Supported
    Extended Channel Switch Announcement        : Supported
    Function Level Reset                        : Supported
    Platform Level Reset                        : Supported
    Bus Level Reset                             : Supported
    MAC Randomization                           : Supported
    Fast Transition                             : Supported
    MU-MIMO                                     : Supported
    Miracast Sink                               : Supported
    BSS Transition (802.11v)                    : Supported
    IHV Extensibility Module Configured         : Supported
    SAE Authentication                          : Supported
    WPA3 SUITE-B Authentication                 : Supported
    WPA3 SUITE-B FIPS Mode                      : Not Supported
    OWE Authentication                          : Supported
    FTM as Initiator                            : Not Supported
    MBO Support                                 : Supported
    Number of Tx Spatial Streams                : 2
    Number of Rx Spatial Streams                : 2
    Number of Concurrent Channels Supported     : 0
    P2P GO ports count                          : 1
    P2P Clients Port Count                      : 1
    P2P Max Mobile AP Clients                   : 10
    Max ANQP Service Advertisements Supported   : 0
    Co-existence Support                        : Wi-Fi performance is maintained

https://support.microsoft.com/en-us/windows/faster-and-more-secure-wi-fi-in-windows-10-26177a28-38ed-1a8e-7eca-66f24dc63f09