What can I do in class 12 to get me honoured on national or international level.
Academics wise you can try to become among the toppers in your board exam. Or become the the topper in a national level exam.
You can also be recognised for your contribution to the nation, to the world by becoming an activist like Malala Yousafzai who has become a role model for women globally. Or climate activist Greta Thunberg who has become a global phenomenon.
You could also become a social media influencer and be recogised globally.
There will be number of opportunities offered by the schools to provide their students a platform to participate in the activities or competitions belonging to national or international level.
You can look for them and don't miss any chance of participating if you really wish to.
Also, you can go into some sports activities as various sports competitions are conducted on national level that will provide you a chance to get yourself honoured there.
The schools provide various opportunities to the students, it's up to you to grab them and be on top.
Hope it helps.