This site's own FAQ addresses this directly: follow the serving instructions printed on your current product packaging.
Worth reading this as this site's direct answer to avoiding a guess — rather than stating a specific gummy count itself, which it could not confirm, this site directs you to your own physical packaging.
This site's own FAQ immediately follows this instruction with a direct caution: do not exceed the recommended serving unless a qualified professional advises otherwise — worth reading both together as one complete serving-size answer.