Now that I have time to think about it, I think I'll give it a 8 out of 10. I honestly thought Infinity War was better.
What hurts this movie for me is that despite the secrecy surrounding the plot, the story was really disappointingly simple. They travel back in time to undo everything. The one thing that elevated the film was how well the emotional aspects were. Almost all the scenes that were supposed to hurt you, hurt you.