I assume that your printer is an MG3620, a good printer I own one as well.
First make sure the cartridges are locked in properly. Normally the printer flashes an orange light if there is a problem with the cartridges themselves.
This estimate ink levels message indicates that the printer cannot see the ink levels. Usually this is a sign the full driver package has not been installed. All the software can be found here: https://www.usa.canon.com/support/p/pixma-mg3620 download the full driver and software package and install it.
Here is a guide (the video is a bit basic but I watch it when I installed mine) written instructions to connect to a Windows pc is just below the video. The setup connects your printer to your PC and the PC connects it to your wifi. I connected my MG3620 using a printer cable, and setup network printer sharing so other devices can print.
https://support.usa.canon.com/kb/s/article/ART162917
