SCHEDULE OF STOCK-BASED COMPENSATION EXPENSE (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 2,599,247	$ 3,630,996	$ 7,686,921	$ 10,116,775
Research and Development Expense [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	986,406	1,667,986	2,786,486	4,555,447
General and Administrative Expense [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 1,612,841	$ 1,963,010	$ 4,900,435	$ 5,561,328