As there are many factors that may affect the indexing process, Algolia cannot provide an estimated time for indexing.
We cannot guarantee the amount of time it takes for Shopify to send Algolia the product data to initiate the indexing process on Algolia's end.
Indexing jobs can also get stuck depending on the record size or the indexing queue.
For more information on our Shopify plugin indexing, you can review this Support article: [Shopify] Why is my indexing slow?