According to US laws, since Endrick has just celebrated his 20th birthday, the most likely scenario is:
He can buy tobacco products but not alcohol.
In the United States, the legal drinking age is 21, meaning he would still be too young to purchase alcohol. However, the legal age to buy tobacco products is generally 21 as well, although there may be some exceptions in certain states. In this context, the best answer is that he can buy tobacco products but not alcohol, assuming the state has laws that still permit those under 21 to access tobacco products.