If you can read katakana well, I’m sure you would have read it as “Trump”, the name of the current US President.
Then, what do you think the next sentence means?
きのう、ともだちとトランプしました。kinou tomodachi to toranpu shimashita
The literal translation is “I did Trump with my friends yesterday.” Then, what does “to do trump” mean?
The answer is “to play cards.” Playing cards are called トランプ in Japanese.
So, if your friends say "トランプしませんか toranpu shimasenka"
they are simply inviting you to play cards with them.