Power Source : Power Adapter

Hello Guys

I'm mostly at home these times and use my MacBook always on power adapter. It's constantly on 100%.

I wonder if my battery gets any kind of harm while using this way.

I have heard before that when MacBook's battery get on 100% and it's connected to power source , it doesn't use battery resources and it also saves battery cycles.

Please share with me your knowledge

Many thanks in advance