There are a few reasons why you might have 0 voting power on Snapshot:
No required assets: You might not hold the necessary assets or meet the criteria based on the voting strategies used by the space. Each space can have different requirements.
Delegation required: For some tokens (like those using ERC-20 Votes), you need to delegate your tokens to gain voting power.
Proposal start requirements: Voting power is determined at the time a proposal starts. If you didn’t meet the requirements when the proposal started, you won’t have voting power for that proposal.
You can check your current voting power on the space’s proposals page to see if you meet the criteria.