Score each word from list variable

[pythonias2019]

Hi, I have a list comprised of a tweet and score.
I'd like to split the tweet into words and assign the total score of the tweet to each word.
Any help is much appreciated, new to Python! Thanks

 
Tweet_list = [('You better believe you're beautiful', 3),('Happy Birthday to my friends',4)] 

def word_sentiment(): 
    list_words = [] 
    for tweet in tweet_list: 
        for word in tweet.split(" "): 
            list_words.append((word)) 
    return list_words 

Desired output:

Output:
 [('You',3) ('better',3) (believe',3) ('you're',3) ('beautiful',3) ('Happy',4) ('Birthday',4) ('to',4) ('my',4) ('friends',4) ]