Ones I'm good at:
Latin (clearly!) - also generally the variants as used in Eastern European languages - I'd tend to count them all together, including any that use diacritics in as being, essentially, Latin
Cyrillic and its variants - fluently for Russian, various degrees of fluency for others
Greek - not bad
Hebrew - slowly, and depends enormously on the context - I can always read the actual letters, I have them down pat both handwritten and printed, and I can write them, too, but being able to actually read the words aloud/know the vowels/understand in plene script? That depends enormously on context and whether I have enough language to be able to make the right assumptions in any given piece of text - I've not attempted to read Yiddish, so have no idea how fluent I'd be reading that
Not so great at:
Hiragana and katakana - knew them once, but I'm beyond out of practice... heck, out of practice would be a compliment heheh
Arabic script - I have learned this, or tried to, several times, but not having a tame Arabic speaker to hand means that I haven't figured out the subtle differences between certain letters that are represented similarly in Latin letters, and that makes it that much harder to use my usual methods of memorising a script... I can write my name and Salaam! I would love to get this down at some point, as I think it's a beautiful script
On my "to learn" list:
Tengwar (so pretty!)
Some form of runes once I figure out which...
I'd make that four scripts in which I have some serious degree of competency. I can read most Eastern European languages, though much of what I read I wouldn't actually understand, ditto Western European languages, but since they generally use inflected or modified versions of Cyrillic or Latin letters, I wouldn't count them as individual scripts.
Fluent: English, rusty Русский
Learning: עברית, Esperanto
Previously learned/would like to brush up: Hrvatski
Bits and pieces of various other languages!