Roughly something like this:

1: Not just bad in the sense that I didn't enjoy it at all and felt no emotional attachment, but so bad that it physically effected me.

2: It might have had one or two redeeming features, but it wasn't enjoyable and I wasn't invested in any way.

3: Deeply flawed, but there's a few aspects of it that work. It wasn't offensively bad, but it was severely lacking.

4: As high as I'm willing to rate something I dropped. Anything that I completed and is here or lower I wish I'd dropped.

5: It was alright, but it probably wasn't really worth watching at the end of the day. Probably had some solid moments though.

6: Around the line where I may be willing to watch a sequel. Flawed, but not so severely that I couldn't enjoy myself.

7: While I probably wouldn't rewatch it, it did have some high quality scenes. Generally enjoyed it or was attached to the characters.

8: Would consider rewatching it, was constantly excited about it, invested in the characters or just had a lot of fun.

9: Absolutely spectacular in almost every way. I was completely absorbed in it and was utterly blown away.

10: Is a completely new experience for me, and fundamentally changes what it means for something to be 'good'.