User data is in local storage, you can retrieve it. Here is an example of the code:

Place the code below in the Other Functions (TypeScript) field:

userName:string = `No Login` ;
userEmail:string = `-` ;
public ngOnInit(){
	this.storage.get("current_user").then((current_user)=>{
		console.log(`storage`, `current_user`, current_user);
		if (current_user && current_user.token){
			this.userName = current_user.user_name ; 
			this.userEmail = current_user.user_email ; 
		}else{
			this.userName = `Anonymous` ; 
			this.userEmail = `~` ; 
		}
	});
}

Then you can display the username in Page Content (HTML5) like this:

{{ userName }}