Yes. Many scholars have acknowledged that it is permissible to conduct a Nikah online as long as the usual conditions are met for a valid Nikah. They suggest that there is no issue with conducting the ceremony online via Zoom, Skype, or other online mediums. According to the mainstream Sunni schools of thought, for a Nikah to be valid, what necessary are the verbal acceptances from the bride & bridegroom, in the presence of witnesses, with consent from the bride's Wali (legal guardian), and a Mahr (bridal dower) agreed beforehand.
It is to be noted that, during the circumstances of Covid 19, many renowned Muslim scholars, including Mufti Ismail Menk and Shaykh Hasib Noor, have taken to social media to openly encourage Nikah through online considering the emergency circumstances. This should be considered as a wise suggestion and a feasible alternative for many Muslim couples because, otherwise they have to delay their Nikah for many more months to have the guardian, the bride and groom and the witnesses on-site. With the advanced technology at our disposal today, an online Nikah is the best suggestion for those who are apart distances.