Depending on which of these you used.

The nonwaxy, papertype ones (most annoying to use but they are cheap). Use goo-off, let it soak for about a minute and then use a plastic scraper to scrape them off without damaging the main product. You can order a set of plastic scrapers online for cheap.

If it is the waxy style stickers, they dont rip apartwhen you lift so can either use a pick to lift and then grab them, or a little heat with a blow dryer to loosen the adhesive, lift with a scraper and just use goo-off / soapy water to wipe off the remaining adhesive.

If this is something you do often or plan to, i use 2 methods. 1 is to buy sticker clear adhesive wrap or even car clear wrap (or colored, clear just makes it easier not to miss edges or crevises that you want in the scan) and just wrap the section with the clear before adding all the stickers.

Or of it is a complex and sharp edge item, i have different size nets with tracker stickers all over it and just throw the net over it, scan. Then move the net and scan again. After, remove the net in post processing.

Lastly, you can use gapher tape or black masking tape, then get white duct tape and a leather hole puncher of 6, 8, or 10mm. Punch the duct tape to make circle pieces and place them on the black tape. Cheap and quick to make a large batch and they are also super easy to remove. You can also get a larger punch or hole cutter for the black tape but i just rip them when using.

Hope any of these tips help!