I'm disabled, on wheelchair, I would like to ask 2 questions, one about visiting a country, another about immigrating. Is it okay or would they be closed as off topic?
It's about requirements and whether disabled get rejected and stuff like that.
A question about visiting a country seems very much on topic here (though with more details it might be that some aspect falls foul of what is off topic here).
A question about immigrating is very likely off topic here, though may well not be (subject to the usual provisos) at Expatriates.
Disability or no might make a difference to the answers but should make absolutely no difference to on/off topic or where to ask, provided it is a subsidiary consideration to Travel or immigration.
However the above would seem all irrelevant as you don't appear to have asked either question on either site.