Googling vhs tapes to mac offers a lot of info on $30-$100 analog-to-digital capture boxes that connect between your VHS player and a Mac, along with scenarios for saving files.
Unless the tapes contain adult material and need to be converted in the privacy of your home, the cost of the adapter plus the considerable 1:1 time involved in converting each tape seems to favor using a service to convert the video and either uploading it to the cloud for you or putting it on a portable HD to take home. While places like Walgreens make DVDs for $35/tape you’ll probably find local computer repair shops offering conversion services for closer to $15/tape.