I probably should create a game class for the flow but not sure how to go about it.

blackjack.rb

class Deck
  SUITS = ['♠', '♣', '♥', '♦']
  VALUES = ['2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K', 'A']
 
  def initialize
    @cards = []
 
    SUITS.each do |suit|
      VALUES.each do |value|
        @cards.push(Card.new(value,suit))
      end
    end
 
    @cards.shuffle!
  end
  
  def deal_card
    @cards.pop
  end
 
end
 
class Card
  attr_reader :value, :suit
  def initialize(value, suit)
    @value = value
    @suit = suit
  end
end
 
class Hand
 
  def initialize(player_title)
    @player_title = player_title
    @cards_in_hand = []
  end
 
  def hit(card)
    @cards_in_hand << card
  end
 
  def stay
    puts "#{@player_title} score is #{self.score}"
  end
 
  def score
    score = 0
    has_ace = false

    @cards_in_hand.each do |card|
      if card.value == 'A'
        score += 1
        has_ace = true
      elsif card.value == "K" || card.value == "Q" || card.value == "J"
        score += 10
      else
        score += card.value.to_i
      end
    end

    if has_ace && score <= 11
      score += 10
    end

    return score
  end
 
  def bust?
    score > 21
  end
 
  def display_hand
    if @cards_in_hand.length <= 2
      @cards_in_hand.each do |card|
        puts "#{@player_title} was dealt #{card.value} #{card.suit}"
      end
    else
      puts "#{@player_title} was dealt #{@cards_in_hand.last.value} #{@cards_in_hand.last.suit}"
    end
  end
end
 
deck = Deck.new
player = Hand.new("Player")
dealer = Hand.new("Dealer")
 
# Initial Deal
2.times {player.hit(deck.deal_card)}
2.times {dealer.hit(deck.deal_card)}
 
puts "---------Welcome to BlackJack--------"
 
puts ""
 
while player.score < 22
 
    player.display_hand
 
    puts "Player score #{player.score}"
    puts ""
    print "Hit or stand (H/S):"
 
    move = gets.chomp
 
    puts ""
 
    if move == 'h'
      player.hit(deck.deal_card)
    elsif move == 's'
      player.stay
      break
    end
 
    if player.bust?
      player.display_hand
      puts "Player score #{player.score}"
      puts ""
      puts "Bust! You lose..."
      exit
    end
end
 
while true
  dealer.display_hand
 
  puts "Dealer score #{dealer.score}"
  puts ""
 
  if dealer.score < 17
    dealer.hit(deck.deal_card)
  elsif dealer.bust?
    puts "Dealer busts! You win!"
    exit
  else
    puts "Dealer stands"
    puts ""
    dealer.stay
    break
  end
end
 
if player.score <= 21 && dealer.score <= 21
  if player.score > dealer.score
    puts "You win!"
  else
    puts "You lose!"
  end
end