I havetime hard time Repairing my iPhone to my Apple Watch can you help please

Be sure you are following the watch setup instructions properly. See Set up your Apple Watch https://support.apple.com/en-us/HT204505

If the instructions don't help and you are sure you are using the right Apple ID/Password, then your watch might be defective. I have seen these circumstances before. If you thing it is defective, then your only option is to contact Apple Support (for help and direction about what to do). Some support options are below. Alternatively, if an Apple Store is open in your area, then you can go there to deal with your problem. In this case, you can make a genius-bar appointment (https://www.apple.com/retail/geniusbar/) if you want. Note that, in either case, you will need to have the receipt for your purchase of the watch from an authorized Apple seller with its serial number on it.

Get a call from Apple support to help solve your problem using this

link https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362

Apple ID Support https://support.apple.com/apple-id

Apple ID account security for country-specific and region-specific help https://support.apple.com/en-us/HT204169

Get Support: We’re here to help https://getsupport.apple.com/. Go through the options to find the best support option.

Can you try factory resetting the watch?

Watch - Unpair and erase your.