SCHEDULE OF STOCK-BASED COMPENSATION EXPENSE (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 2,507,272	$ 3,348,260	$ 5,087,674	$ 6,485,779
Research and Development Expense [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	913,003	1,522,571	1,800,080	2,887,461
General and Administrative Expense [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 1,594,269	$ 1,825,689	$ 3,287,594	$ 3,598,318