Voting Delay

The number of CORE blocks to wait before voting on a proposal may begin. This value is added to the current block number when a proposal is created.

Governor Bravo

function votingDelay() returns (uint)

• RETURN: Number of blocks to wait before voting on a proposal may begin.

Solidity

GovernorBravo gov = GovernorBravo(0x123...); // contract address
uint blocks = gov.votingDelay();

Web3 1.2.6

const blocks = await gov.methods.votingDelay().call();