How do I forward texts on my iPhone SE?

go into the conversation and select the text you want to forward by touching the text until an option menu pops up. From here you can copy the text and paste it into another message thread.. Or you can select 'More...' tap to select multiple texts, press the arrow at the bottom right and type in a contact to forward to.

If you want to get to the 'More...' menu quicker, you can also use 2 fingers and drag right on the text you want to forward

If you are talking about forwarding messages to your other Apple devices.. see this link

How to forward SMS/MMS text messages from your iPhone to your iPad, iPod touch or Mac - Apple Support

Lightly press on the message, then tap "more", then tap the arrow (bottom right corner).

Regards

Giulio

My pleasure