https://wk.baidu.com/view/329daafdbaf3f90f76c66137ee06eff9aef84994
http://www.360doc.cn/mip/982055971.html
anime character database contains dialogs:
https://www.animecharactersdatabase.com/episodetranscript.php?pid=1915&epid=1
quodb the movie quotes database:
scifi movie script example:
http://www.scifiscripts.com/cartoon/howls_moving_castle.html
japanese bangume script:
http://akita.cool.ne.jp/hikoseki/script/laputascript_v210all_n.html
May not work:
https://jref.com/threads/where-in-internet-could-i-find-anime-dialogs-scripts-in-japanese.43408/
suggest you find this in zhihu.
https://zhuanlan.zhihu.com/p/389873370
https://zhuanlan.zhihu.com/p/450050772
find movie quotes:
33.agilestudio.cn
https://zhaotaici.cn/mindex.html
Bangume info wiki: