I am new to speedruning in general and just to make sure that im not wasting my time and since it isnt clarified in the rules I just want to check if I can use an autoclicker on Any% No Skips (have checked some speedruns and I am not sure wether they are using an autoclicker or not).

For No Skips, why would you use it for no skips? If you mean skips there’s a category for it.

Just so that i dont have to click since im lazy.

I don’t see there being a problem with that you could probably use one but it would be difficult to not skip levels with an auto clicker. So yeah if you can do no skips with an auto clicker i don't see a problem as long as you don’t skip a level.