That’s hard to say as it depends on numerous individual factors. Things like your internet speed (download), the speed of the harddrive (ssd, nvme, etc), whether your node is connected via ethernet or Wi-Fi, how the hdd is connected, etc.
What I can tell you is my beacon data folder is currently fully synced and showing 26.3 GiB and on average my shard data folders are showing just under 15 GiB each.