I need it for a school project. I have built planes using plans I found online and never bothered to measure speed during take of. I am required to state it however.
Any help will be appreciated. Thank you.

Welcome to the forum

Good to see a real aero question.

Please share the wing span, chord and all up weight ofyour model, so I can try to estimate the takeoff speed...

Regards

PS
Pl also say which engine or motor, and diameter &pitch of prop