How To Know If Your Taubah Has Been Accepted?
Unfortunately, there is no authentic info available in this regard. However, Allah has said in Quran at many places that God is forgiving and one need to repent with sincerity. Plz see Discussion 22342 You may also find these helpful https://islamqa.info/en/answers/46683/acceptance-of-repentance https://jundunlittawheed.wordpress.com/2015/05/29/the-signs-for-the-acceptance-and-non-acceptance-of-tawbah-repentance/
Please see : Discussion 55972