SCHEDULE OF BASIC AND DILUTED EARNINGS PER SHARE (Details) - USD ($)	12 Months Ended
	May 31, 2022	May 31, 2021
Accounting Policies [Abstract]
Net income attributable to common stockholders	$ 3,938,478	$ 3,030,165
Weighted-average common shares outstanding-basic	28,423,721	28,361,201
Income per share of common stock - Basic	$ 0.14	$ 0.11
Net income attributable to common stockholders	$ 3,938,478	$ 3,030,165
Add: Preferred stock dividends due to assumed conversion	328,459	323,219
Net income allocated to common stockholders	$ 4,266,937	$ 3,353,384
Incremental common shares from assumed conversion of warrants, options and preferred stock, as appropriate	3,828,711	4,003,741
Diluted weighted average common stock outstanding	32,252,432	32,364,942
Income per share of common stock - Diluted	$ 0.13	$ 0.10