Getting Blockstate value and increments it

Hello, I'm actually pretty new about mod developpment on Minecraft, and I'm running some problems

I have a block, and I want to :

- when i right click on it and when i am not crouching, it increments an IntegerProperty

- when i right click on it and when i am crouching, it reduces the property

But as far as I know, I neither don't know how to get the value of an IntegerProperty nor how to change it.

public class PlatformIndicatorBlock extends Block {

    public  final  IntegerProperty PLATFORM_NUMBER = IntegerProperty.create("number", 0, 20);

    public PlatformIndicatorBlock() {
        super(AbstractBlock.Properties.create(Material.CLAY, MaterialColor.LIGHT_BLUE)
                .hardnessAndResistance(2f, 6f)
                .harvestTool(ToolType.PICKAXE)
                .harvestLevel(1)
                .sound(SoundType.STONE));

        this.setDefaultState(this.getDefaultState().with(PLATFORM_NUMBER, 0));
    }

    @Override
    protected void fillStateContainer(StateContainer.Builder<Block, BlockState> builder) {
        builder.add(BlockStateProperties.HORIZONTAL_FACING, PLATFORM_NUMBER);
    }

    @Override
    public BlockState getStateForPlacement(BlockItemUseContext ctx) {
        return (BlockState) this.getDefaultState().with(BlockStateProperties.HORIZONTAL_FACING, ctx.getPlacementHorizontalFacing().getOpposite());
    }

    // Idk if the tile entity is useful there
      
    @Override
    public boolean hasTileEntity(BlockState state) {
        return true;
    }

    @Override
    public TileEntity createTileEntity(BlockState state, IBlockReader world) {
        return new PlatformIndicatorTileEntity();
    }

    @Override
    public void onBlockClicked(BlockState state, World worldIn, BlockPos pos, PlayerEntity player) {
        // The methods that I don't know
    }
}

Thank you