In different cases it is more convenient to read out the BIOS settings within Windows or even modify them.
Depending on the brand of your machine you can find a complete handbook to achieve that with PowerShell.

Here I give you the example for Lenovo and HP - Just examples that may work for your machine or not - check the manual corresponding do your machine!

Lenovo

Tested on Lenovo T14 models.

# List all Settings
gwmi -class Lenovo_BiosSetting -namespace root\wmi | ForEach-Object {if ($_.CurrentSetting -ne "") {Write-Host $_.CurrentSetting.replace(","," = ")}}

# Show a partical value
gwmi -class Lenovo_BiosSetting -namespace root\wmi | Where-Object {$_.CurrentSetting.split(",",[StringSplitOptions]::RemoveEmptyEntries) -eq "MACAddressPassThrough"} | Format-List CurrentSetting 

# Full BIOS Settings as table
gwmi -class Lenovo_BiosSetting -namespace root\wmi  | Out-GridView

# Set a BIOS setting 
# Use the following command as a template to set the value of a setting. 
# This is a two-step process: set and then save. 
# Note: The setting string is case sensitive and should be in the format "<item>,<value>". 
(gwmi -class Lenovo_SetBiosSetting –namespace root\wmi).SetBiosSetting("WakeOnLAN,Disable")
(gwmi -class Lenovo_SaveBiosSettings -namespace root\wmi).SaveBiosSettings() 

# Set a BIOS setting when a supervisor password exists 
# Use the following command as a template to set the value of a setting 
# when a supervisor password exists. 
# This is a two-step process: set and then save. 
# Note: The setting string is case sensitive and should be in the format 
# "<item>,<value>,<password + encoding>". 
(gwmi -class Lenovo_SetBiosSetting –namespace root\wmi).SetBiosSetting("VTdFeature,Enable,yourbiospassword,ascii,us")
(gwmi -class Lenovo_SaveBiosSettings -namespace root\wmi).SaveBiosSettings("yourbiospassword,ascii,us")

# Examples:
(gwmi -class Lenovo_SetBiosSetting -namespace root\wmi).SetBiosSetting("VirtualizationTechnology,Disable,yourbiospassword,ascii,us")
(gwmi -class Lenovo_SaveBiosSettings -namespace root\wmi).SaveBiosSettings("yourbiospassword,ascii,us") 

HP

Tested on HP 840 models.

# Get Settings
Get-WmiObject -Namespace root/hp/InstrumentedBIOS -Class HP_BIOSEnumeration

# Get Settings but in txt file
Get-WmiObject -Namespace root/hp/InstrumentedBIOS -Class HP_BIOSEnumeration | Out-File -FilePath c:\HPBiosSettings\HPBiosSettings.txt 

# Save HP Settings in a variable
$HPBiosSettings = Get-WmiObject -Namespace root/hp/InstrumentedBIOS -Class HP_BIOSSetting 

# Example for changing a value
$Interface.SetBIOSSetting("Reuse Embedded LAN Address","Enable")

# Example
# Put all values in a variable
$SettingList = Get-WmiObject -Namespace root\HP\InstrumentedBIOS -Class HP_BIOSEnumeration  
# Output just the name and value from the variable set before
$SettingList | Select-Object Name,Value
# Output just the name and value for "Reuse Embedded LAN Address"
($SettingList | Where-Object Name -eq "Reuse Embedded LAN Address") | select-object Name,Value 

# Example with BIOS Password
$Password = "<utf-16/>"+"yourbiospassword"
$BIOS = gwmi -class hp_biossettinginterface -Namespace "root\hp\instrumentedbios"
$result = $BIOS.SetBIOSSetting("NumLock on at boot", "Enable", "$Password")