Set-ExecutionPolicy RemoteSigned -Scope CurrentUser
This will set the execution policy for the current user (stored in HKEY_CURRENT_USER) rather than the local machine (HKEY_LOCAL_MACHINE). This is useful if you don’t have administrative control over the computer.
RemoteSigned is a safer execution policy than Unrestricted. If you download a script and RemoteSigned is preventing you from executing it, then after vetting the script, remove the restriction by opening the file’s properties and flagging “Unblock”. If this is infeasible, then you can set the policy to Unrestricted instead.