No, but there are search engines just for PeerTube.
If you want a blocklist-based one (where everything is allowed unless it's manually blocked) have a look at PeerTube's own official Sepia Search engine at https://sepiasearch.org (This may contain nasty stuff though if no one has reported it.)
If you want an allowlist-based search engine (where only manually allowed accounts appear), I run one at https://fedi.video. This is much safer than Sepiasearch, but has fewer results.