When I ran the command on Win64

curl -L <https://git.io/meshery> | PLATFORM=kubernetes bash -

I got the following error

PLATFORM=kubernetes : The term 'PLATFORM=kubernetes' is not recognized as the name of a cmdlet, function, script file,
or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and
try again.
At line:1 char:34
+ curl -L <https://git.io/meshery> | PLATFORM=kubernetes bash -
+                                  ~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (PLATFORM=kubernetes:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

Can someone help me in resolving this error?

You should start here:

The installation scripts has been changed recently