C:\Users\rajmo>-alias androiddebugkey -keystore %USERPROFILE%.android\debug.keystore '-alias' is not recognized as an internal or external command, operable program or batch file.
try this command from cmd or flutter terminal . go to C:/your profile/ project name/android and then type gradlew signingReport . it will give all SHA-1 and all other certificates.
In my case it look like this -
C:\ronan\facebook\android>gradlew signingReport