Minecraft – How to use a score in a different command in Minecraft

The command for adding players to teams is:

scoreboard teams join [teamname] [players]

And the code that means "all players" is @a

That means, to add everyone to a team we do

scoreboard teams join <teamname> @a

All we need to do is add a modifier to @a to accomplish what you want You had it right, but you were saying when there score is a maximum of one. This is the command you would use:

scoreboard teams join Rank1 @a[score_ranklvl_min=1, score_ranklvl=1]

It sounds like "Test" is not a real player.

The problem in this case is that target selectors like @a[...] can only resolve / find entities that exist somewhere in the world and are loaded.

This means that while you can change the scores of fake or offline players (scoreboard scores are stored in scoreboard.dat rather than playerdata) by specifying their name directly, i.e.

/scoreboard players set Rayset Score 29

You can not use target selectors unless there is an entity to resolve.

If an entity exists, your command is correct. @a[score_Score_min=1] resolves all player entities with a Score score of at least 1.