We used blue painters tape on some of our baseboards. It worked in most areas. There were a couple of spots that it didn’t matter though. She would chew through the tape or nick it until she could get a good grab on it and then pull it off. We would catch her running across the room with blue tape stuck to her chin like a beard.
A physical barrier is probably best. It doesn’t look as nice or clean, but it is more of a guarantee of safe, undamaged baseboards. But I would venture nothing is 100% chew safe when these little ones are around. Ours was one clever little girl. She would do something, we would counter with a deterrent. She would figure out something else. We counter. Something new. We counter. In the final years we had gotten the destruction in check and to a very minimum (read not 100% but close). That is the trade off for sharing our life with a precious little one. Would do it all over again. The experience of having and loving a rabbit over aesthetically perfect corners and edges.
But ours was free roam 24/7. Some only allow free roam when they are home. That would also help to minimize the destruction I would think.
So such a long answer for: Yes tape helped some. But not 100%. But a physical barrier would be best.