How would I convert a group name to group ID?

So what im trying to do is check if a group name exists and if it doesnt then it prints the group name. I think I know how to do that but im just trying to see how I would get the id from the name.

I'm not sure you can really check a group through it's name but you can however use GetGroupInfoAsync() in order to get most the groups info.

local groupId = 0 -- change this to your group id
local groupService = game:GetService('GroupService')
local group = groupService:GetGroupInfoAsync(groupId)

-- group is a dictionary full of all info

print(group.Owner.Name)
print(group.Name)

You can find out what data you can find through this link.

Hope this helps.