No SIM card hole on my iPhone 5SE?

I have never heard of an iPhone 5SE. There's a 5, and there's 3 versions of SE. To identify your iPhone model refer to the information in this article --> Identify your iPhone model - Apple Support

Includes model number variants by country.

See this support article for how to remove or switch the SIM card in your iPhone --> Remove or switch the SIM card in your iPhone - Apple Support

Read this article about how to transfer a physical SIM or eSIM on your previous iPhone to an eSIM on your new iPhone after setup

About eSIM on iPhone - Apple Support --> Use eSIM Quick Transfer on iPhone

There is no such thing as an iPhone 5SE.

Open the Settings App. Tap General, then about. Look for model and post back what you see.

You might also want to include the Model #.

Settings>General>About>Model Number.

All the SE models can use physical SIM cards. Some can also use eSIM (there will be no physical card). If yours has a card, use the instructions in the link I provided earlier to change it. If it does not, read about changing eSIMs.

What is an iPhone 5 SE? What is the exact model number of your iPhone? What country are you in?