* "Les arts dramatiques" is correct and means "the dramatic arts" or "the performing arts".
* "Je pas ca" is a nonsensical phrase. It seems like an attempt to say "I don't like that" or "I don't do that" but the French would be "Je n'aime pas ça" or "Je ne fais pas ça".
Possible interpretations:
1. The person is trying to say they don't like the performing arts but is making a grammatical mistake.
2. The person is using slang or a specific dialect that is not standard French.
3. The person is simply making a typo.
To get a clearer meaning, you would need more context or the full sentence the phrase came from.