HBR does not have a subscription model for libraries - their sales model is intended for individuals.
We checked this with them in 2021 and were advised:
"Unfortunately we are unable to offer institutional subscriptions. All subscriptions are for single user access so each individual would require their own subscription.
We have different subscription packages available from digital only to our premium package. Details of these can be viewed online at hbr.org
Discounts are available for bulk subscriptions of 100 or more for the digital + print subscription offer. If you are interested in this, please confirm how many subscriptions you would like and we will advise you on the price.
Harvard Business Review Customer Services"
Access is available from a platforms called Health Business Elite and Ebsco Business Source Complete. However you need both platforms to get access to the HBR 500 review articles - a set of articles that change over time and can only be read on screen. Case studies are not available on the platforms. Due to all these limitations, the Library cannot subscribe to HBR.