GUI GroupInfo What do I need to start of to make it work Help?

You can get group data via the :GetGroupInfoAsync() function. It includes the group ID, name and owner.

Here is an example on how to get the owner of a group;

local groupId = 377251
local groupInfo = game:GetService("GroupService"):GetGroupInfoAsync(groupId)

print(groupInfo.Owner.Name) -- Outputs owner name.

If you want to display user information about the group, you can use the :GetRankInGroup()and :GetRoleInGroup()

Here is an example on the two functions;

local groupId = 123

print(game.Players.Vecaxo:GetRankInGroup(groupId)) -- Outputs the name of the rank.

--[[
	255 is the number of the highest role set in group terms. It's the
	owner basically.
	Guests are 0.
--]]
if game.Players.Vecaxo:GetRoleInGroup(groupId)) < 255 then
	print('vecaxo is not the owner of the group 123')
end

SOURCES GetGroupInfoAsync() GetRoleInGroup() GetRankInGroup()