I need to raise the cursor (Sight) of the weapon.
Does anyone have any ideas 😃

The cursor (i guess you mean the crosshair) is a IGuiOverlay, you can disable it via canceling the RenderGuiOverlayEvent.Pre for VanillaGuiOverlay#CROSSHAIR.

Then create your own IGuiOverlay and render there you're custom crosshair, you can move/modify it there in the way you want.
You can take a look at ForgeGui#renderCrosshair as an example how to render a crosshair.

Oh no, I don't think I explained it correctly, I need to <move up the mouse>, only through the code. 
Well, you know, like in shooters when the weapon rises when shooting, I apologize for my English.

    // ########## ########## ########## ##########
    @Override
    public InteractionResultHolder<ItemStack> use(Level warudo, Player pe, InteractionHand hand) {

        ItemStack itemstack = pe.getItemInHand(hand);
                
        pe.setXRot(pe.getXRot() - 15.0F);

     }

 

//why xrot makes steve move its head up an down and not left and right

// i thing someone messe that up

 

 

 

perromercenary00, thx 😃