Redstone circuits/Pulse/pulse multiplier - minecraft.fandom.com

Dispenser Double-Pulser

Subtraction 1-Clock Pulse Multiplier

Subtraction N-Clock Pulse Multiplier

Torch-Repeater N-Clock Pulse Multiplier

Dropper-Latch 2-Clock Pulse Multiplier

The top dropper contains a single item. The bottom dropper contains a number of items equal to the desired pulse count.

Dropper-Latch 1-Clock Pulse Multiplier

The dropper contains a single item. The middle hopper contains one or more items depending on the desired pulse count (the first and last items should be non-stackable items).