Use the Vitis analyzer to visualize the HLS Synthesis Report. You will need to build the kernel without SOLUTION=1 to generate link_summary as this is not provided as part of tutorial. You can skip this step as well.
vitis_analyzer $LAB_WORK_DIR/build/single_buffer/kernel_4/hw/runOnfpga_hw.xclbin.link_summary
The HLS Synthesis Report shows the number of LUTs, REG, and BRAM utilized for the Bloom4x kernel implementation.