In SEO , When We do Off Page Submission then per day howmany website we submit website for seo?

In SEO you want your submissions to look natural, so even if you are automating everything be sure that you are submitting larger numbers then you could do by hand. As far as an exact number of how many submissions to do a day, I would probably say 5 to 10. But it always depends on industry and what your competition is doing.