Hi @mjimena__ ,
Welcome to the community!
As per as my information there is no limit on the invitation. You can invite as many people as you want in a Trello Board.
For more information visit https://help.trello.com/article/732-adding-observers-to-boards
Hello Community! My name is Brittany Joiner and I am a Trello enthusiast and Atlassian Community Leader. I'll be sharing with you a series of videos with my top tips on how to best use Trello...
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