It can take your broker a day or two to process this mandatory corporate action. If you say you hold 300,000 Realbiz as of the record date in April then you should receive 1,000 Nestbuilder shares and expect them to be priced at 0.75
I am not sure whether we will see the name change for Realbiz done as of Monday so they could still trade as that until it's changed to Verus Foods