Terp profile is short for terpene profile. Cannabis has many different cannabinoids, one being the THC that gets you high. There are other compounds called terpenes That give it its taste, smell, and feeling. This is what makes one strain of marijuana different from another. They have different combinations of terpenes. Terpenes are found in most plants actually, and are extracted to make essential oils. There are hundreds of different terpenes which is why we have so many different varieties of cannabis. Different profiles have different effects when consumed. Some terps put you to sleep, some wake you up, some kill pain, some help with anxiety, and we're getting better at understanding which terps treat which ailments.
When I say that Gelato is known for its dessert like terp profile I'm saying the terpenes provide an awesome dessert like flavor.
This article can explain it better than me
https://www.leafly.com/news/cannabis-101/infographic-what-are-cannabis-terpenes-and-how-do-they-affect-you
Thanks for the info dude, i didn't know any of this!