It can be confusing to know which tool in the SSIS toolbox to use when trying to execute a PowerShell script from within SSIS.
The best task to use is an Execute Process Task. Under General you can give it a name and a description.
On the process section you fill in all the necessary details. Such as Executable, Arguments and Working Directory.
Once this is complete you can then execute your PowerShell script from within SSIS.