How would I make a kick script but not require the full name?

Use string.match(...)

function fuzzyKick(targetName)
    players = game:GetService("Players")
    matches = {}

    for i, v in pairs(players) do
        if string.match(v.Name, targetName) then
            matches[#matches + 1] = v
        end
    end
    
    if #matches == 1 then
        v:Kick()
    elseif #matches == 0 then
        -- report no matches
    else
        -- report multiple matches
    end
end