How do I make a hotbar?

hello i am making a sandbox building game and need to make a hot bar to switch materials

That's not a very specific question.

Then again linking to the tutorial section isn't a very specific answer.

construct.net/en/tutorials

also how is it not specific

It consists of multiple parts. We can help you with a part that you don't understand.

If you have done a few tutorials you would have an idea of how to start.

Generally menu's consist of sprite, tiled bg, text object, and something to store data like an array.

Nobody is going to put that all together for you, but there are tutorials.

thanks. also do you know how to recover a project tghat u didi't sae bc the project where i needed a hotbar was open when my computer died and it did not save any thing

Happens to everybody.

Save early. Save often.

okay thanks i guess i should have saved it after working on it for 2 hours straight