How to pass value from form to another form and use else where in the program.

private void loginButton_Click(object sender, EventArgs e)
        {
            username = userNameTextBox.Text;
            password = passwordTextBox.Text;
            role = roleSelectionComboBox.Text;
            if(username == "" || password == "" || role =="")
            {
                MessageBox.Show("Please fill all");
            }
            else
            {
                dbcon.Connection();
                query = "Login";
                com = new SqlCommand(query,dbcon.con);
                com.CommandType = CommandType.StoredProcedure;
                com.Parameters.AddWithValue("@useName", username);
                com.Parameters.AddWithValue("@pass", password);
                int userCount = (Int32)com.ExecuteScalar();
                if(userCount == 1)
                {
                    this.Hide();
                    Dashboard adminDashboard = new Dashboard();
                    Profile profileData = new Profile();
                    profileData.ProfileInfo(role);
                    adminDashboard.Show();
                }
                else 
                {
                    MessageBox.Show("count is 0");
                }
            }
        }

public partial class Dashboard : Form
    {
        public string uname;
        public Dashboard()
        {
            Login LG = new Login();
            Profile pro = new Profile();
            uname = pro.ProfileInfo(LG.role);
            InitializeComponent();
        }

        

        private void Dashboard_Load(object sender, EventArgs e)
        {
            label1.Text = uname;
            //MessageBox.Show(profileInfo.UserName);
        }
    }

public class Profile
    {
        public string UserName{get; set;}
      //  public string ImageUrl { get; set; }
        public string ProfileInfo(string userName)
        {
            this.UserName = userName;
            return UserName;            
            //this.ImageUrl = imageUrl;
        }    
    }

Profile profileData = new Profile();
        profileData.ProfileInfo(role);