Hi @23218Z , welcome to the forums!
I’d recommend utilizing the search tool in the top right corner of your screen. In this case I searched the string “3D printing parts legal” and the results was an incredibly high number of topics. One of which was titled Answered: 3D Printed Parts Legal? Another more recent one was titled Is it legal to use 3d printed parts in VRC. And another was titled 3d printed parts in high school.
All 3 (out of oh so many) of these linked topics should provide you an answer.
Feel free to check this forum feature out the next time you have a question.
It will save you from the barrage of “Read the Manual” replies that are bound to be sent your way.