I am using SVM algorithm for text classification. I need to know where can I find twitter dataset and how can I use it in weka tool or any other tool?
Twitter has rules that limit sharing of complete datasets, instead limiting sharing to the tweet ids (see this discussion and the developer agreement). Tools such as twarc can be used to "rehydrate" the tweet metadata by calling the Twitter api and retrieving the info. The Twitter API has rate limiting which can make this a somewhat slow process.
This collection of twitter datasets might help you find the dataset you're looking for. Mainly sentiment analysis datasets, but moderation and classification datasets too.