You cannot directly plot a filter object. Convert the filter to its representation in the frequency domain using the freqz function.
Where h is the frequency response (vector of complex numbers), w is the normalized angular frequency, b and a are the transfer coefficients you obtained using butter, and n is the number of points.
Or you can use
Where d is the digital filter. Eg. H1 in your case.
Use abs(h) to convert h to magnitude.
Another option is using
Which plots the frequency response magnitude in dB.
Then to filter your data, you can use.