attempt to compare number <= boolean any way I can overcome this?

Hello, I have a shop script that gives speed, however I want to make a speed cap on the shop and I get an error (title)

local speedcap = 50
elseif item == "Speed" then
            if not player.Speed.Value >= speedcap then
            player.Speed.Value = player.Speed.Value + 5
                player.Character.Humanoid.WalkSpeed = player.Speed.Value
                player.leaderstats.Coins.Value = player.leaderstats.Coins.Value - price
                return true
            end

Is there any way to overcome this? Any help is appreciated!