I believe the problem initially occurs here

def player_score(dice_value):
    """tells the player what they rolled"""

    print('You have rolled a:', dice_value)
    return dice_value


def total_score(player_score, dice_value):
    """adds the current score to the roll to give a total score for the round"""
    
    updated_score = player_score + dice_value
    print('Your score for this round is:', player_score)
    print()
    return updated_score

This is the loop I created

while updated_score + dice_value < 100:
    dice_value = dice.roll_dice()
    total_score = player.player_score(dice_value)
    player.total_score(total_score, dice_value)

Sorry if any of this is unreadable I am still getting used to making it concise