MacBook fan is almost always on.

Start with About fans and fan noise in your Apple product - Apple Support, and click the link in "Learn more about the operating temperature of Apple laptop computers."

That takes you to the useful part of the next Support document:

"If your Mac laptop gets warm even when it isn’t doing tasks that require intensive calculations, or if it has fans that run for a long time, use Activity Monitor to check CPU activity. Look for malfunctioning processes that can put a significant load on the CPU and check for unexpected fan use. If issues persist, close and open the lid on your laptop, or restart your computer. If you have an Intel-based Mac, reset the SMC."

Using View energy consumption in Activity Monitor on Mac - Apple Support, select its View menu > My Processes as a starting point. Sorting that list by %CPU in descending order will reveal the most demanding processes.

Most likely, the Logic Pro app will be at or near the top of that list, which is to be expected. Additional processes are likely to be contributing to the overall machine processing burden, some of which may be actionable.

Post a screenshot of that Activity Monitor window if you wish.

My 2015 15" MBP was also fan cooled, not passively cooled, and it was designed to always run with the fans running albeit at a minimum speed of around 2000 RPM. I couldn't hear them but they were always on. It was only when a load was placed on it and generating more heat would you hear the fans automatically speed up. I suspect yours is no different and wouldn't worry about it. If you want to monitor internal temps and fan speeds a free app such Macs Fan Control works well which is what I use.

Mid- and upper Intel tends to run hot, and can require active cooling. Fans shouldn’t be all that noisy though, so either the room is very quiet, or maybe there’s a problem with dust in the cooling passages.