put them into gamemodes\helix\gamemode\core\hooks\cl_hooks.lua

surface.CreateFont("BetaHud", {
    font = "Consolas",
    size = 35,
    extended = true,
    scanlines = 2,
    blursize = 1.5,
    shadow = true,
    weight = 100
})

surface.CreateFont("BetaLittleBigHud", {
    font = "Consolas",
    size = 40,
    extended = true,
    scanlines = 2,
    blursize = 1.5,
    shadow = true,
    weight = 100
})

surface.CreateFont("BetaBiggerHud", {
    font = "Consolas",
    size = 45,
    extended = true,
    scanlines = 2,
    blursize = 1.5,
    shadow = true,
    weight = 100
})