It depends on the stock and the current demand for that stock. If you had GME shared during the recent frenzy, you could have earned a lot in interest. But, say you have Google, you won't earn much since there is a lot of shares and lot of people willing to lend.
Do you have a sense of at least order of magnitude for the interest rates? Like, is this a "up to 0.25% annually" situation or is it something more substantial?