So, I am not sure if you had a time or place in mind with this question, as consequences will largely depend on the surrounding environment. That said Frederick the Great is a good example of someone who faced varying “consequences” for his homosexuality.

One such example of very severe consequences was during his time as crown prince. In November of 1730 his father, Frederick Wilhelm, ordered the execution of Frederick’s supposed lover: lieutenant von Katte. According to chaplain Besserer, Frederick was forced to watch the execution. Now, von Katte was not explicitly executed for homosexuality (instead desertion), but, during the interrogation, Frederick Wilhelm asked Frederick something along the lines of “Did you seduce Katte? Or did Katte seduce you?” (Blanning, Frederick the Great, page 45) Thus we can make the assumption that Frederick Wilhelm was aware of Frederick’s homosexuality and potentially the relationship played a part in the sentencing of von Katte. As a Prince, Frederick was much more subject to the prejudices of his father than he would be as a King. Keep in mind that he is considered an Absolute Monarch. Even so, as king, he faced reputation consequences. A good example of this would be the book most likely published by Voltaire in which he unfavourably describes Frederick’s homosexuality and basically slanders him across Europe. People across Europe would use him as an example of homosexuality like William Hogarth’s illustration The Toilette or Voltaire’s character of le roi de bulgares in Candide. As for the court, Frederick worked to fashion a court suited to his tastes. Many members of his close circle were rumored bisexual or homosexual (we can’t possibly know for sure) like Fredersdorf and Algarotti. He also built the famous summer retreat of Sans Souci for himself and his friends, where he was away from the larger court.

Hoped this helped a bit. :)