Yes! You can use your Mperks account with Shipt when shopping at Meijer through the service. Here’s the catch though - you can only collect points using Shipt, you can’t redeem them unless you actually go into Meijer and use them while shopping yourself. Keep in mind, this may vary from store-to-store (your Meijer/Shipt partnership may be different from my Meijer/Shipt partnership), but with my Meijer/Shipt partnership, this is how the rewards system works.
Another thing to keep in mind is that if your local Meijer has only recently paired with Shipt, they may not have Mperks in place yet but you can always send a quick message to Shipt support via Facebook to find out when they’ll be incorporating shopping rewards for your store.